Table for hardness numerals and tensile strengths [BRG 213/207/5/692-693] • Photograph

Table for hardness numerals and tensile strengths

Table for hardness numerals and tensile strengths

GM Holden Ltd, 8 February 1944, Photograph, BRG 213/207/5/692

Both sides of measurement tool.

Table for hardness numerals and tensile strengths

Table for hardness numerals and tensile strengths

GM Holden Ltd, 8 February 1944, Photograph, BRG 213/207/5/693

Both sides of measurement tool.