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![]() Pull your tape from the origin point and using a fine tipped white marker, mark the correct measurement for each course. Lay the blocks with their center top to the tape mark. As any deviation to gauge will cause plumb errors, the sheet lists correct measurements for variance in gauge, as well as plumb errors for gauge variance. Check the gauge occasionally and if the plumb error is significant, use the alternate measurement on the sheet. The calculator sets the circle or arc out to suit blocks, giving the inside and outside perp measurements and allowing you to open or tighten the perps (bond) in quarter block increments, to a suitable size. It calculates the 'block + perp' outside measurement, so you can check your bond as you go around. Eg: if the outside 'block + perp' is 8~1/4", and you've laid 10 blocks on the way around, 10 X 8~1/4 is 6'10~1/2". Pull a tape around the outside of the arc to see if you're 'back' or 'forward'. |
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