The last one!! Precision 100mm double Square (Starrett)

The Starrett Double Square is a precision square very popular with machinists, toolmakers, and pattern makers. Supplied with one traditional graduated rule. The standard rule provides a wonderful compact square with excellent accuracy rivaling common machinist square accuracies of.001" per inch, per U.S. federal standard: GGG-S-656E. Available with a 100mm precision hed rule with chrome satin finish with blackened hes that is easy on your eyes for excellent contrast and improved accuracy.

The powder coated square casting provides the accuracy required but avoids the stock-heavy feel of a solid machinist's square, providing excellent balance and feel. Rules lock securely in any position from full left to full right with the tightening of the knurled thumbscrew.

This model is not manufactured anymore and we have only the last five available.

Premium quality - Made in USA.