Sterling Tool Works Combination Rules - Metric/Imperial

Item: STW-CSR-EM

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Product Description

Many have combination squares, they are usually second hand or heirlooms that have been passed down in the family. In many instances the rules are corroded and treatments to removed the rust leave them shiny and more difficult to read. Sterling Tool Works is now offering Premium replacement rules that are precision made in the USA. The rules are chemically etched, etchings blackened, tempered and satin chrome plated for excellent resolution that is easy on the eyes.

Give your vintage Combination Square an upgrade with a new rule! Available in English Metric graduations; .5mm, 1mm and 64th, 32nd inches.

Note: Sterling Tool Works cannot guarantee that these rules will fit ALL vintage square heads, they have tested with several different makers and vintages that they have on hand and all have worked. The critical dimensions to verify if these will work are:

12" / 24" Rule:
Thickness = .088" / 2.2mm
Width Total = 1" / 25.4mm
Width Edge to Groove = .46" / 11.7mm
Groove Width = .093" / 2.4mm

6" Rule:
Thickness = .079" / 2mm
Width Total = .73" / 18.5mm
Width Edge to Groove = .32" / 8.1mm
Groove width = .090" / 2.3mm

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