This 7-Step block is the metric "A" version. Variations of this block are available if additional steps are preferred. Also, larger step faces are offered for use with large diameter transducers. In accordance with ASTM E797.
Geometry:
1.0, 1.5, 2.0, 4.0, 6.0 ,8.0, 10 mm steps
20x20 mm square faces
Supplied with plastic carrying case and certificate of conformance
