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| Hole gauge
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Gauge to measure the diameter of a small hole. |
| Hole punch
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A tool that punches out a circular section of material leaving a hole in the remaining piece. |
| Hole saw
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A small, cylindrical attachment for a power drill consisting of a circular saw blade for cutting holes. |
| Holiday
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A missed spot in painting or tarring a roof or foundation, sometimes called a Sunday, it is named because of the idea of a holiday being a gap in work. |
| Hollow
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Having an empty space or cavity inside an object. |
| Hollow brick
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A brick with several large holes through the core so that you can look through to the other side. The brick amount is less than 75 percent of the total surface area. |
| Hollow concrete masonry unit
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Concrete block with several large holes through the core so that you can look through to the other side. The block amount is less than 75 percent of the total surface area. |
| Hollow ground
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Also called taper ground, this way of grinding a blade to taper from a thicker cutting edge to a thinner section toward the hub to keep it from binding in the material being cut. |
| Hollow masonry
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Construction of concrete masonry units, in a single section, one block thick, with the block ends filled with grout as each row is laid. |
| Hollow wall
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Wall with an air space within the wall. |
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