SPI 910175 - 4pc 12" Combination Square Set (Made to Order) OPE M18 Vials will never fog

Vials will never fog

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SPI 910175 - 4pc 12" Combination Square Set (Made to Order) OPE M18 Vials will never fogCombination Square Set 4 Piece Center head (made of cast iron): To locate center of cylinder with diameter (d): 1. 181" DIA 3. 937" DIA, Accuracy: 0. 006" Protractor head (made of cast iron): Set the blade at desired angle to an edge of a workpiece, and can be used to measure angle range: 0 180, accuracy: 20min. Square head (made of cast iron): Set the blade at 90 or 45 to an edge of a workpiece, Accuracy: 8min for 90 square, 10min for 45 square12"