30 FBH Resolution Calibration Block (Inch Version) Special Alloy

The 30 FBH resolution reference block is used to evaluate the near-surface resolution and flaw size/depth sensitivity of a normal-beam setup. In accordance with ASTM E428. 

Dimensions: 11.000" x 4.000" x 1.500"

Contains 30 flat-bottom holes at 3/64” diameter, ten at 5/64”, and ten at 8/64”. Metal travel distances range from .050” to 1.250”.

Material: Special Alloy