Joseph Marples Trial 1 - 12" Try Square
Product Description
The Joseph Marples Trial 1 12" Try Squares have 1/8" thick machined brass on both the inside and outside faces, thus ensuring accuracy on the inside and outside edges.
They have a chemically blacked spring steel blade, secured to the stock with brass diamond washers and steel rivets. The accuracy of the try squares is well within that required by BS3322.
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