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Bolt Circle Calculator

Calculator Menu

Enter values below to calculate the coordinates of the holes in a bolt circle.

Number of Holes	N
Diameter of Bolt Circle	D in mm
Diameter of Holes	d
Angle of First Hole	A degrees
Offset of Center	X Y

Transfer Punch Set, Sizes A-Z, 24 Piece

Transfer Punch Set, Sizes A-Z, 24 Piece

25 Piece A-Z Transfer Punch Set
Range is A to Z.
Heat treated and tempered tool steel for long life
Transfer punches are 0.0025" undersize for precise fit

$22.95

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Transfer Punch Set, Sizes #1-60, 60 Piece

Transfer Punch Set, Sizes #1-60, 60 Piece

60 Piece #1-60 Transfer Punch Set
Range is #1 to #60
Heat treated and tempered tool steel for long life
Transfer punches are 0.0025" undersize for precise fit

$28.95

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Electronic Digital Indicator, 0.5"

Electronic Digital Indicator, 0.5"

Measurement range is 0-0.5"
Resolution is 0.0005", accuracy is 0.0012"
Measures in inches or mm
Set to zero at any position

$44.95

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