The heavy duty instruments in the 7-Piece Caliper Set bear little resemblance to those you might have used in school. These are rugged, industrial workshop grade instruments, milled from solid steel, with brass fittings, heavy-duty fitted hinges and knurled locking nuts. For serious architects, draftsmen, engineers and woodworkers, set includes a round caliper, straight caliper, pencil compass, eraser, two pencils, and a brass pencil sharpener. A huge value.
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