As part of our visit to Japan, H Roberts & Sons also toured Mitutoyo’s Kiyohara facility, a site dedicated to the production of linear scales and display modules, both essential components in modern precision measurement systems.

This visit offered a unique insight into the technologies that sit behind digital measurement, where accuracy is not only mechanical, but also electronic.

Going Underground: Master Scale Production

One of the most memorable parts of the visit was heading deep underground to see master scale production first hand.

These master scales form the reference standard for linear measurement systems, and their accuracy is critical. The underground environment provides exceptional stability, protecting the process from temperature variation, vibration, and external interference.

Seeing this level of control in place highlights just how seriously Mitutoyo approaches precision at the highest level.

Linear Scales: The Backbone of Digital Measurement

Kiyohara is responsible for producing linear scales used across a wide range of Mitutoyo equipment, from machine tools to advanced inspection systems.

These scales convert physical movement into highly accurate digital readings, and their performance directly affects the accuracy of the entire system.

The manufacturing and calibration processes are extremely detailed, ensuring each scale delivers consistent and reliable results in demanding environments.

Display Modules and Small Tool Integration

Following the underground visit, we moved onto the main shop floor to see the production of display modules used in small tools.

These modules are what bring digital instruments to life, providing clear, accurate readings for users in real time.

Seeing how they are assembled and integrated gave a better understanding of how electronic components and precision engineering work together seamlessly.

Assembly and Integration

The Kiyohara facility also includes linear scale assembly lines, where components come together into finished systems.

What stood out here was the level of coordination required. Mechanical accuracy, electronic performance, and calibration all need to align perfectly.

Each stage is carefully checked to ensure the final product meets the high standards expected from Mitutoyo.

Final Thoughts

For H Roberts & Sons, the visit to Kiyohara provided a deeper appreciation for the technology behind digital measurement.

From master scale production deep underground to the assembly of linear scales and display modules, every step is focused on achieving the highest levels of accuracy and reliability.

It is a reminder that precision is not only about what you can see, but also about the systems working behind the scenes to deliver dependable results.

Kiyohara shows that true accuracy is built from the ground up, and sometimes even below it.