PROTRACTOR:
USED TO SET AN ANGLE OR ANGLE MEASUREMENT,
MEASURING RANGE: 0-180, ACCURACY: 7'
SQUARE:
USED AS 90 OR 45 SQUARE
90 SQUARE ACCURACY: 8',
45 SQUARE ACCURACY: 10'
RULE:
USED AS RULE,
RANGE: 300MM/12"
CENTER FINDER:
USED TO FIND THE CYLINDER CENTER,
ACCURACY: 0.15MM
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