Standard Test Block (STB) Type A2 is used for adjusting the working sensitivity and for the measurement of overall performance characteristics of test equipment. STB types A21 (Fig. 5) and A22 (Fig. 6) are also available.
- Made from 1018 Steel, Nickel-plated.
- Spec: Japanese Industrial Standard JIS Z 2345 Figure 4
- Block Size: 15 mm x 150 mm x 300 mm