Checkline SB [SB-4L] 4 Step Steel Calibration Test Block (0.040, 0.060, 0.080, 0.100 inch; 1.016, 1.524, 2.032, 2.540 mm)

Checkline SB [SB-4L] 4 Step Steel Calibration Test Block (0.040, 0.060, 0.080, 0.100 inch; 1.016, 1.524, 2.032, 2.540 mm)
The SB Series of steel calibration step blocks allow you to conveniently check the accuracy of ultrasonic thickness gauges. All blocks are made from 1018 Steel and include NIST-Traceable Calibration Certificate and a hardwood storage case.