As“a pioneer of pin gauges”As“a pioneer of pin gauges”, we reach the top of measuring.
As“innovators of diamond tools”As“innovators of diamond tools”, we lead the top of manufacturing.

EISEN is a comprehensive manufacturer of measuring tools and diamond tools, founded as Japan's first pin gauge manufacturer.
We use world-class measuring capabilities and precision machining technology developed as a pin gauge manufacturer to deliver high-quality products such as thread gauges, diamond electroplated tools and diamond indenters for hardness testers to our customers more quickly.