村上衡器製作所 List of Products and Services

This document presents the range of agreed mass for weights and our target values for manufacturing. In the first section, we explain the maximum allowable error, expanded uncertainty, and the relationship with agreed mass in JIS B7609:2008 "Weights," using specific examples. In the latter section, we introduce our internal manufacturing regulations for mass adjustment in the production process of new weights, which we have independently established to meet the requirements of JIS standards, as well as the target values for agreed mass. [Contents] ■ Introduction ■ JIS B7609:2008 "Weights" ■ Mass Adjustment in the Weights Manufacturing Process ■ Conclusion *For more details, please refer to the PDF document or feel free to contact us.

• Scale

This product is a set of standard weights for additional loads used to calculate the measurement error, as specified in JIS B 7611-2:2015 Appendix JB, 3, 2, which is essential for weighmasters. It comes as a complete set, making it easy to carry. This is an inspection set for weighing instruments with a minimum scale of 20g or less, designed to prevent loss during inspections. Additionally, it can also accommodate inspection sets for weighing instruments with a minimum scale of 50g or more, so please contact us if you require this. 【Features】 ■ Inspection set for weighing instruments with a minimum scale of 20g or less ■ Comes as a complete set, making it easy to carry ■ Prevents loss during inspections ■ Can also accommodate inspection sets for weighing instruments with a minimum scale of 50g or more *For more details, please refer to the PDF document or feel free to contact us.

• others

The "M-TCR-01" is a shutter-type windbreak weighing platform that reduces the influence of wind on balances. It is made of aluminum, duralumin, and anti-static PVC, which helps to mitigate the effects of magnetism and static electricity. The shutter design allows for effective use of the workspace. Additionally, the structure allows the feet to fit under the platform, enabling measurements to be taken in a posture that minimizes strain. 【Features】 ■ Reduces the generation of airflow that affects measurements ■ Made of aluminum, duralumin, and anti-static PVC ■ Mitigates the effects of magnetism and static electricity ■ Allows for effective use of workspace with shutter design ■ Enables measurements to be taken in a posture that minimizes strain *For more details, please refer to the PDF document or feel free to contact us.

• Weighing Machine
• others

Since our founding, we have continuously made unrelenting efforts and faced challenges over four generations, achieving steady development as a specialized weighing instrument company for over 100 years. We manufacture and sell a variety of weighing instruments, ranging from large scales to small balance scales. In particular, the promotion of science education and industrial education in schools has been emphasized, and our various balances have been widely supplied in large quantities to schools as educational equipment, significantly contributing to the advancement of science education. Additionally, alongside our long history and tradition, we incorporate excellent technology and, under the strong unity of all employees, continue to strive for the development and research of new products, contributing to the increasingly advanced industrial sector. 【Business Activities】 ■ Manufacturing, sales, calibration, and inspection of precision weighing instruments (scales, weights, etc.) *For more details, please refer to the PDF materials or feel free to contact us.

• Scale
• Weight related measuring instruments

We are currently providing materials from Murakami Hōki Seisakusho Co., Ltd., which deals with weights, scales, and inspections, detailing the management of measuring instruments that comply with the specified requirements. This document includes information aimed at the mass measurement management department regarding the establishment of a management system using standard weights with JCSS certification, as well as the reasons for managing scales with weights. [Contents] ■ Management of scales using weights ■ Management of measuring instruments that comply with specified requirements ■ Calibration cycles and management limit values ■ Management limits and conformity assessment ■ Weight management for general users, etc. Additionally, Murakami Hōki can calibrate weights to within 1 mg. We also support the issuance of calibration certificates with the JCSS logo. *For more details, please refer to the PDF document or feel free to contact us.

• Scale

We are currently providing materials from Murakami Measuring Instruments Co., Ltd., which deals with weight products, scales, and inspections, detailing the management of measuring instruments that comply with the specified requirements. This document includes information aimed at the manufacturing industry's quality mass measurement management department, such as the establishment of a management system using standard weights with JCSS certification and the reasons for managing scales with weights. 【Contents】 ■ Management of scales using weights ■ Management of measuring instruments that comply with specified requirements ■ Calibration cycles and management limit values ■ Management limits and conformity assessment ■ Weight management for general users, etc. Additionally, Murakami Measuring Instruments can calibrate weights below 1 mg and can issue calibration certificates with the JCSS logo. *For more details, please refer to the PDF document or feel free to contact us.

• Scale

We are currently providing materials from Murakami Measuring Instruments Co., Ltd., which deals with weights, scales, inspections, and more, detailing the management of measuring instruments that comply with the specified requirements. This document includes information aimed at the quality and mass measurement management departments in the manufacturing industry, such as the establishment of a management system using standard weights with JCSS certification and the reasons for managing scales with weights. [Contents] ■ Management of scales using weights ■ Management of measuring instruments that comply with specified requirements ■ Calibration cycles and management limits ■ Management limits and conformity assessment ■ Weight management for general users, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Scale

We are currently providing materials from Murakami Scale Manufacturing Co., Ltd., which deals with weights, scales, inspections, and more, detailing the management of measuring instruments that comply with the specified requirements. This document includes information on building a management system using standard weights with JCSS certification, as well as reasons for managing scales with weights, aimed at the quality measurement management departments in the manufacturing industry. [Contents] ■ Management of scales using weights ■ Management of measuring instruments that comply with specified requirements ■ Calibration cycles and management limit values ■ Management limits and conformity assessment ■ Weight management for general users, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Scale

Our company focuses on mass measurement and is engaged in the manufacturing and calibration services of balances and weights. Based on over 100 years of accumulated know-how, we are capable of assembling mechanical scales that require advanced technology and performing high-precision mass adjustment and calibration at the 1μg level. This document introduces "weights with JIS marks," which ensure the reliability of weights. It covers accuracy grades, characteristic evaluation standards, as well as manufacturing and inspection processes. [Contents (excerpt)] ■ Overview of JIS standards - Specified items - Three characteristics of weights ■ Manufacturing process of JIS weights - Manufacturing and inspection processes - Mass inspection and traceability *For more details, please refer to the document available for "PDF download."

• others

Murakami Scale Manufacturing Co., Ltd. is registered as an international MRA-compliant JCSS mass calibration provider with the National Institute of Technology and Evaluation (NITE) and issues calibration certificates with the JCSS logo for weights, masses, and scales. Our calibration services are delivered to customers with the motto of "Accuracy" (highest measurement capability, abundant technical documentation), "Speed" (calibration turnaround time), and "Affordability" (reasonable prices). 【Services】 ■ JCSS Mass Calibration Service ■ JCSS Calibration of Weights and Masses ■ JCSS Scale Calibration, etc. For more details, please refer to our catalog or feel free to contact us.

• Calibration and repair

Murakami Scale Manufacturing Co., Ltd. is registered as an international MRA-compliant JCSS mass calibration provider with the National Institute of Technology and Evaluation (NITE) and issues calibration certificates with the JCSS logo for weights, masses, and scales. Our calibration services are delivered to customers with the motto of "accurately" (highest measurement capability, abundant technical documentation), "quickly" (calibration lead time), and "reasonably" (fair pricing). [Services] ■ JCSS Mass Calibration Service ■ JCSS Calibration of Weights and Masses ■ JCSS Scale Calibration, etc. For more details, please refer to our catalog or feel free to contact us.

• Calibration and repair

The document "Introduction to JIS Standard 'Weights' and Manufacturing Process" provides an overview of JIS B7609:2008 "Weights" and introduces the manufacturing process of JIS-marked weights at Murakami Scale Manufacturing Co., Ltd. It includes the specified items of the JIS standard that indicate compliance, as well as how our company, a weight manufacturer, produces JIS-marked weights in accordance with the JIS mark display system and supplies them to the market. [Contents] ■ Overview of JIS Standards ■ Manufacturing Process of JIS Weights For more details, please refer to the catalog or feel free to contact us.

• Scale
• Other measurement, recording and measuring instruments
• Analytical Equipment and Devices

Murakami Measuring Instruments Manufacturing's "Rental Weights" is a service that provides users with weights equivalent to the mass of the items submitted for JCSS mass calibration requests to our company. The rental period is either the duration of the custody of the calibration items or within one week, but it can be extended in one-week increments. Additionally, JCSS calibration certificates and accuracy certificates can be issued for an extra fee. Please make use of this service when you suddenly need weights. For more details, please refer to the catalog or feel free to contact us.

• Scale
• Other measurement, recording and measuring instruments
• Analytical Equipment and Devices

The "WEIGHTS Stainless Steel Weights Comprehensive Catalog" is a catalog from Murakami Hōki Seisakusho Co., Ltd., which manufactures industrial machinery and scales. It features a variety of products, including non-magnetic stainless steel weights "OIML Type Standard Weights," titanium plate weights "Sub-Milligram Weights," and corrosion-resistant "Pillow Type Weights." *We are currently offering a free "Technical Document" that explains the "Storage Environment," "Handling Methods," and "Calibration Cycle" for weights! Please download it from the form below for more details. [Featured Products] ■ OIML Type Standard Weights (Weights with JIS Mark) ■ Reference Weights ■ Sub-Milligram Weights ■ Pillow Type Weights ■ Large Weights, etc. For more information, please visit our booth at the 21st Tokyo Machine Elements Technology Exhibition, view our catalog, or feel free to contact us.

• Other measurement, recording and measuring instruments
• Scale

The "Balance Comprehensive Catalog" is a catalog from Murakami Balance Manufacturing Co., Ltd., which manufactures and sells precision weighing instruments. It features a variety of products including "top-loading balances" with stainless steel pans and stainless steel weights, "electronic balances" with bright, large, and easy-to-read fluorescent displays, and "automatic top-loading balances" that immediately indicate the weight value on the dial, among many others. [Featured Products] ■ Top-loading balances ■ Electronic balances ■ Tabletop vibration isolation tables ■ Accessories for balances ■ Automatic top-loading balances, etc. For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments
• Scale

The "Stainless Steel Weights Comprehensive Catalog" is a catalog from Murakami Scale Manufacturing Co., Ltd., which manufactures and sells precision scales. It features non-magnetic stainless steel weights that comply with the JIS B7609:2008 standard, such as the "OIML Standard Weights," as well as corrosion-resistant plate-shaped titanium "Sub-Milligram Weights" and corrosion-resistant "Pillow Weights," among many others. [Featured Products] ■ OIML Standard Weights (Weights with JIS Mark) ■ Reference Weights ■ Sub-Milligram Weights ■ Pillow Weights ■ Large Weights, etc. For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments
• Scale

The "KPR-H type" is a 1/2 scale replica of the international kilogram prototype. The international kilogram prototype is a standard defined internationally in 1889 that indicates a mass of 1 kilogram. It is strictly stored in a double-sealed container, protected in a vacuum, at the International Bureau of Weights and Measures (BIPM) located in Sèvres, near Paris, France. The material of the prototype in this product is non-magnetic stainless steel with a mirror finish. It is ideal as a gift or commemorative item for those involved in measurement. 【Features】 ■ 1/2 scale replica of the international kilogram prototype ■ Custom engraving for gifts (plate) is also available separately ■ Options: wooden display stand, transparent resin case For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments
• Scale

"Sub-Milligram Weights" are plate-shaped titanium weights with excellent corrosion resistance, designed for sub-milligram measurements. Currently, the minimum mass of weights specified in the international recommendation OIML R111-1:2004 and the domestic standard JIS B7609:2008 is 1mg. The challenge was that it was not possible to directly manage the mass range below 1mg, but our company has achieved a mass standard below 1mg using titanium. 【Features】 ■ Plate-shaped titanium with excellent corrosion resistance ■ Stored in a dedicated case with a set of 0.5mg, 0.2mg×2, and 0.1mg ■ Comes with a cross-pin set for easy handling of sub-milligram weights ■ Includes inspection report and traceability diagram ■ A calibration certificate from A2LA can also be issued for an additional fee For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments
• Scale

The "JIS Marked Weights" are non-magnetic stainless steel weights that comply with the JIS B7609:2008 standard. Quality is guaranteed, and they are marked with the new JIS mark. Specifically, a label indicating compliance with the new JIS mark standard is affixed to the weight storage case. They are manufactured under a quality management system based on JIS Q9001 (ISO9001) and are shipped after undergoing inspections that comply with JIS Q17025 (ISO/IEC 17025). 【Features】 ■ Complies with JIS B7609:2008 standard ■ Non-magnetic stainless steel weights ■ A symbol of reliable safety, security, and trust: JIS mark attached ■ Strict manufacturing quality control from material to production, inspection, and shipping ■ Stable quality assurance For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments
• Scale

Murakami Scale Manufacturing Co., Ltd. is registered as an international MRA-compliant JCSS mass calibration provider with the National Institute of Technology and Evaluation (NITE) and issues calibration certificates with the JCSS logo for weights, masses, and scales. Our calibration services are delivered to customers with the motto of "Accuracy" (highest measurement capability, abundant technical documentation), "Speed" (calibration turnaround time), and "Affordability" (reasonable prices). [Services] ■ JCSS Mass Calibration Service ■ JCSS Calibration of Weights and Masses ■ JCSS Scale Calibration, etc. For more details, please refer to our catalog or feel free to contact us.

• Calibration and repair

The document titled "How to Determine the [Uncertainty] of Scales and Weights in Mass Measurement Management" explains the definition of error and [uncertainty], including "the difference between error and uncertainty" and "the procedure for determining uncertainty." [Contents] ■ What is Uncertainty ■ The Difference Between Error and Uncertainty ■ Procedure for Determining Uncertainty ■ Measurement Method in Standard Mass and Weight Calibration ■ Calculation of Uncertainty in Weight Calibration, etc. For more details, please refer to the catalog or feel free to contact us.

• Scale

This product is a Newton weight made of high-quality stainless steel. Our company is a top-class domestic manufacturer that consistently produces various Newton weights from material processing to final adjustments, and we can issue calibration certificates (mass units) with the JCSS logo that prove these weights are traceable to national measurement standards. Customers considering switching to Newton weights are welcome to consult us. 【Features】 ■ High-quality stainless steel ■ Consistent production of products *For more details, please refer to the catalog or feel free to contact us.

• Other measurement and measuring equipment

This product is a precision weight with national certification (certification seal stamped). It is made of high-quality stainless steel. To suit various applications, we offer options ranging from individual pieces to sets in aluminum cases and sets in plastic cases. 【Features】 ■ National certification (certification seal stamped) ■ Stainless steel *For more details, please refer to the catalog or feel free to contact us.

• Other measurement and measuring equipment

This product is a large weight with stacking capabilities and anti-shift steps and grooves. It is a weight used for the inspection and calibration of mass measuring instruments required for ISO 9000 series certification, boasting an accuracy of OIML Class M1. Additionally, the claws on the outer edge of the disc-shaped weight facilitate crane operations. 【Features】 ■ Stackable with anti-shift steps and grooves ■ OIML Class M1 accuracy *For more details, please refer to the catalog or feel free to contact us.

• Other measurement and measuring equipment

This product is a non-magnetic stainless steel weight based on OIML standards. (Utility model registered, No. 3003704) It can be used for the calibration and inspection of specific measuring instruments. The accuracy is certified with standard weights of class 0, class 1, class 2, and class 3, and comes with a certificate of inspection for standard instruments. 【Features】 ■ Product based on OIML standards ■ Non-magnetic stainless steel weight *For more details, please refer to the catalog or feel free to contact us.

• Other measurement and measuring equipment

This product is a non-magnetic stainless steel weight that conforms to the OIML (International Organization of Legal Metrology) R111-1:2004 standard and the Japanese Industrial Standard "JIS B7609:2008." It is cylindrical and plate-shaped, suitable for calibration of balances and weights. 【Features】 ■ Made of non-magnetic stainless steel ■ Product conforms to Japanese Industrial Standard "JIS B7609:2008" *For more details, please refer to the catalog or feel free to contact us.

• Other measurement and measuring equipment

Weights and accessories from Murakami Scale Manufacturing Co., Ltd. are produced in a factory certified with the international quality assurance standard ISO 9001. 【Features】 ○ National certification included (certification seal stamped) ○ Calibration certificate with JCSS logo can be issued for an additional fee. ● For more details, please contact us or download the catalog (digest version).

• Analytical Equipment and Devices

The "Large Weights Disc Type" is a stainless steel weight with stacking capabilities and anti-shift steps and grooves. The claws on the outer circumference of the disc weight facilitate work with a chain block. Our weights and accessories are manufactured in a factory certified with the international quality assurance standard ISO 9001. 【Features】 ■ The claws on the outer circumference facilitate work with a chain block ■ Calibration certificate with JCSS logo is issued for an additional fee ■ Accuracy: OIML standard Class M1 ■ Material: Non-magnetic stainless steel ■ Types: 1000kg, 500kg, 200kg, 100kg, 50kg * For more details, please refer to the PDF document or feel free to contact us. * This PDF document is a digest version. If you need the full version, please contact us.

• Analytical Equipment and Devices

The "Newton weights" are high-quality weights made of stainless steel. We offer a wide variety of shapes, including cylindrical (OIML type), cylindrical (with precision weight hooks), added weight type, and disc type. Our company consistently produces various Newton weights from material processing to final adjustments, and we are a manufacturer that can issue calibration certificates (mass units) with the JCSS logo mark, proving that these weights are traceable to national measurement standards. If you are currently considering switching to Newton weights or have not yet made the switch, please feel free to consult us. 【Features】 ■ Material: High-quality stainless steel ■ Types: 200N to 0.1N ■ Manufactured in a factory certified with the international quality assurance standard ISO 9001 * For more details, please refer to the PDF document or feel free to contact us. * This PDF document is a digest version. If you need the full version, please contact us.

• Analytical Equipment and Devices

Weights and accessories from Murakami Scale Manufacturing Co., Ltd. are produced in a factory certified under the international quality assurance standard ISO 9001. 【Features】 ○ Non-magnetic stainless steel weights based on JIS (OIML) standards. (Internal structure is registered as a utility model, No. 3003704) ○ Calibration certificates with the JCSS logo can be issued for an additional fee. ○ Complies with all standards set forth in "JIS B7609: 2008" (Note: Class E2 is excluded). *For more details, please download the PDF or feel free to contact us.

• Analytical Equipment and Devices