Radius gauge can quick and accurate measuring internal/external arc Blades locked in a ring,every pieces can be disassemble Every gauge has it's size to measure radius Stamp out mark, easy to read and will not rub off Three options: 1. R1-7mm, quantity of leaves(internal+external): 17+17 pieces: 1.0, 1.25,1.5, 1.75, 2;2.25, 2.5, 2.75, 3, 3.5;4, 4.5, 5, 5.5, 6,6.5,7mm 2. R7.5-15mm Quantity of leaves(internal+external): 16+16 pieces: 7.5, 8, 8.5, 9, 9.5;10.0, 10.5, 11, 11.5,12;12.5, 13, 13.5, 14,14.5, 15.0mm 3. R15.5-25mm Quantity of leaves(internal+external): 15+15 pieces:15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 21, 22, 23, 24 & 25mm
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