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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

Magnetic Base Indicator Holder

Magnetic Base Indicator Holder

Magnetic base indicator holder with one-knob lock
Permanent magnet has an 80 kg (176 lb) holding force
On/off switch makes it easy to position
V-groove base allows you to mount it on cylindrical surfaces

$56.95

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HiTorque 7550 Deluxe Bench Lathe - 8.5x20

HiTorque 7550 Deluxe Bench Lathe - 8.5x20

DRO and digital dials, inch and metric threading
1000 Watt (1.34 HP) brushless DC drive
Reversible lead screw for right and left hand threads
Power longitudinal feed and power cross feed
4" (100 mm) 3-jaw self centering lathe chuck

$3,699.00

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SIEG C3 7x14 Mini Lathe

SIEG C3 7x14 Mini Lathe

Full featured miniature lathe at an incredible price
Includes 3" 3-jaw chuck, 2 sets of jaws, and chuck key
Variable speed with two speed ranges for low speed torque
Digital spindle speed readout
Cam-lock tailstock

$999.00

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