Cast Iron Square Rule - Alternate Names: Square Rule, Cast Iron Square Rule, Inspection Square Rule Rectangular Protractor Square protractors, parallel squares, equilateral squares, etc., cast iron squares feature a frame-like combination of perpendicular and parallel edges, suitable for mechanical and instrument inspections, as well as checking the non-perpendicularity between machine tools. They are essential tools for verifying the non-perpendicularity between internal components of various machine tools. Cast iron squares are a commonly used type of square.

Cast Iron Square RuleGB6092-85Standard manufacturing, materialsHT200-250Used for verticality and parallelism inspection, and can also serve as90°Measurement Reference. Features a vertically parallel framed assembly, suitable for machinery and instrument inspection as well as checking the non-perpendicularity between machine tools.

Cast Iron Square RuleGB6092-85Standard manufacturing, materialsHT200-250Used for verticality and parallelism inspection, and can also serve as90°Measurement Benchmark.

The working surface of the cast iron square ruler must not have any defects such as sand holes, gas holes, cracks, inclusions, shrinkage porosity, scratches, dents, etc., which would affect the performance of the cast iron square ruler.

Standard flatness and perpendicularity for cast iron squaresGB6092-85Used for measuring the parallelism and flatness of workpieces and machine tool guideways, as well as for grinding processing.. Accuracy:0-3Grade.