Invented by a practicing architect, this multi-use tool gives the user
all the advantages of a traditional triangular scale in addition to many
other features, while solving the portability problem of its bulkier
counterpart. Four tools in one! Measure and scale drawings,draw circles
and arcs,draw angles and triangles, or use as a cutting edge. Color: Silver
3145-1 Architect Calibration: 16, (1/8, 1/4),( 1 1/2, 3),1/16.(3/32, 3/16),(1/2, 1),(3/4, 3/8), 1/32
3345-1 Engineer Calibration: 10, 20, 30, 40, 50, 60
3645-1 Combination Calibration 16, (1/8, 1/4), ( 1 1/2, 3), (3/4", 3/8), 10, 20, 50, 60
