Canadian machinery and metalworking (January-June 1919). EH ELECTRIC Steel Castings High Grade STEEL Castings Of Every Description Prompt Deliveries Send us your drawingsfor estimates. THE ELECTRIC STEEL AND METALSCOMPANY, LIMITED WELLAND
Worker is calibrating to vernier caliper with gauge block. Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths. Stock Photo