Precision internal measuring instrument measuring bolt carbide without dial indicator

Design and use:
The internal precision measuring device is a universal and robust two-point comparison measuring device. It is suitable for measuring tasks in production, as well as in incoming goods or final inspection. Centering takes place automatically in the bore, with the base being formed by the centering plate. The wider the centering base, the more reliably the measuring device is centered in the bore.
Highest accuracy, maximum repeatability 0.0005 mm, transmission error 0.0025 mm.
During the measuring process, the so-called reversal point must be determined. This is done by swinging the measuring device around the fixed measuring bolt. The point with the smallest value is automatically passed through, where the measuring device axis is exactly perpendicular to the bore axis. With a mechanical display device, this can be clearly seen from the change in direction of the pointer. When using digital display devices, a minimum value memory is helpful.
The probe pins are equipped with hard metal balls as standard, wearing parts are either made of hard metal or wear-resistant, hardened steel.

The adjustment is carried out using setting rings, micrometer screws or with the ESU setting device together with parallel gauge blocks.

Delivery:
In a wooden case, with test certificate and corresponding measuring bolts and discs, without dial indicator.