Any size rule slide attachment is a measuring instrument that can be adapted to any size rule. Tailored to your needs, this tool can be used to measure the length between two random points - for example the back edge of picture frames, extension cords, towel rails, etc. and then transfer the hole centers to the wall for drilling.
It can also be used as an altimeter or to read data from tables as an "L Square" drawing aid. It works fine as a ruler, but it should be noted that if you use it as a height gauge, your rule divisions should start from the datum edge and not as a ruler starting slightly inside the datum edge.
The product was designed by
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