大古精機 List of Products and Services

"Jigs" are products of Daiko Seiki Co., Ltd., which engages in the design and manufacturing of screw gauges (general), ultra-precision parts processing, processing jigs, inspection jigs, and special measuring instruments. Our company specializes mainly in inspection jigs. We create a master that is the same as the workpiece and read the dimensional differences using a dial gauge through comparative measurement with the master. The final assembly jig accuracy is 0.01 or better, and the master accuracy is ±0.001, so please feel free to consult us regarding shapes and sizes. 【Products Handled】 ■ Measuring Jigs *For more details, please refer to the catalog or feel free to contact us.

• Other machine elements
• Contract manufacturing

"Precision parts" are products of Daiko Seiki Co., Ltd., which engages in the manufacturing of screw gauges (general), ultra-precision parts processing, processing jigs, inspection jigs, and special measuring tool design and production. Our precision parts can meet customer needs with accuracy up to 1 micron. In terms of shape, processing is possible from Ø0.8 to Ø300. Please feel free to consult us about precision screw parts, precision collets, precision pins, precision bushes, and more. 【Products Offered】 ■ Collets ■ Jig parts ■ Air micro-jets ■ Step spindles ■ Screwed shafts, etc. *For more details, please refer to the catalog or feel free to contact us.

• Other machine elements
• Contract manufacturing

The "Gauge" is a product of Daiko Seiki Co., Ltd., which specializes in screw gauges (general), ultra-precision component processing, manufacturing of processing jigs, inspection jigs, and special measuring tools. In our company, we are engaged in training and developing excellent design engineers to respond to customer requests more advanced and more swiftly. As for the types of gauges, we also manufacture screw plug gauges, screw ring gauges, plug gauges, ring gauges, caliper gauges, groove width gauges, and other special-shaped gauges, so please feel free to consult us. 【Products Offered】 ■ Screw Plug Gauges ■ Ring Gauges ■ Caliper Gauges ■ Taper Gauges ■ Plug Gauges, etc. *For more details, please refer to the catalog or feel free to contact us.

• Other machine elements
• Contract manufacturing

Our company was founded in 1935 as a specialized manufacturer of various gauges, tools, and precision measuring instruments. As a gauge manufacturer, our OKS brand products have received high praise and are well-loved for their high precision and quality maintenance. We will respond quickly based on the technical expertise and know-how we have cultivated over many years, delivering satisfaction to our customers. 【Business Activities】 - Screw gauges (general) - Various limit plug gauges - Various limit ring gauges - Ultra-precision parts processing, processing jigs, inspection jigs - Design and manufacturing of special measuring instruments, etc. For more details, please contact us or download the catalog.

• Inspection fixture

Although it is classical, the judgment of pass or fail, which simplifies the criteria to passing if it fits on one side and stops on the other side, is called a limit gauge. Limit screw gauges are currently standardized according to international standards (ISO method), but there is still a significant demand for the old standards (Grade 1, Grade 2, Grade 3).

• Other measurement, recording and measuring instruments