The squareness measurement optics determine the out-of-squareness of two nominally orthogonal axes, by comparing their straightness slope values which are referenced via the optical square.

Note: A straightness measurement optics kit and straightness accessory kit are also required to perform squareness measurements.

Each squareness measurement optics kit contains:

• 1 optical square and clamp screws

• 1 bracket (for adjustable turning mirror)

Specifications:

Range ±3/M mm/m (±2000/F arc sec)

Resolution 0.01 µm/m (0.01 arc sec)

Where:

M = measurement distance in meters

F = measurement distance in feet