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  • Measuring device consisting of 6" to 8" hardwood, steel or aluminum lengths connected by spring joints that unfold for measuring distances.
  • Some models include an extension slide for measuring closed-in areas such as doorways and window frames where a regular folding rule will not work. The rule is unfolded as far as possible, then the slide is extended and its measurement added to the overall measurement for a total measurement reading.
  • Different models are designed for specific measuring needs of masons, engineers, carpenters and plumbers.

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