Lee Valley Precision Double Square 4"

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This square is not a standard production model but one made to our design. Available with a 4"(100mm) blade or a 6"(150mm) blade, it features a slimmer than normal stock and an acc uracy guaranteed to be better than 0.001" per inch, exceeding our regular machinist's squares. It doubles as a try square and a precision square, suitable for both layout work and machinery set-up and checking. The precision open-work casting not only provides the accuracy required but avoids the stock-heavy feel of most machinist's squares. The blade locks securely in any position from full left to full right. Made in USA for Lee Valley Show more