This favorite simple but precise tool by Stanley was patented over a century ago. Simply extend the clapboard in place beyond the corner trim, wack the wood handle and a precise length is provided by the indentions. Expecially important on a old colonial house over 250 years old and constructed essentlially by “eye”.
This time-tested installation method for flangeless windows ensures smooth operation and provides air, water, and vapor control.
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