A set of three industrial safety notices relating to the United Kingdom Abrasive Wheel Regulations 1970. These documents consist of printed forms with handwritten ink completions, designed to be displayed in a workshop environment to ensure the correct and safe operation of grinding machinery. The first notice identifies a Wolf Twin Stone machine, number ZC 3, with an 8 inch by 3/4 inch wheel and a machine spindle speed of 3000 RPM. The second notice lists a Milford machine, number TSB G47, with a 10 inch by 1 1/2 inch (1 1/4 hole) wheel. The third notice specifies a Rowland machine, number TSB 643, with a 19 inch by 2 1/2 inch wheel and a pulley diameter on the wheel spindle of 2 1/2 inches. All three are housed in simple wooden frames painted in a dark forest green, each featuring two pre-drilled holes at the top for wall mounting.
Dimensions: 15 x 11 inches.
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