Inspection, calibration and verification of the machines in Parts 1, 2 and 3. Accuracy of gauges used in checking components, in an appendix.
BS 131-4:1972 history
2016BS EN ISO 148-3:2016 Metallic materials. Charpy pendulum impact test. Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines
2009BS EN ISO 148-3:2008 Metallic materials - Charpy pendulum impact test - Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines
0000 BS EN 10045-2:1993
1972BS 131-4:1972 Notched bar tests - Calibration of pendulum impact testing machines for metals