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Size 6-3/8'' X 10-3/8''. Has all 1/128th to 1/4, all 1/64ths to 1, all 1/32nds to 1-1/4. 85 circles - 1/32'' to 1-1/4'' Diameter . All are dimensioned in both fractions and decimals. Common sizes are emphasized. Has lifetime precision pin-point centering.
