Bolt Circle Diameter Calculator

Enter values below to calculate the diameter of a bolt circle.

Tip:

To measure the center distance between two holes of equal diameter with an electronic caliper.

1. Use the inside jaws to measure the diameter of one of the holes. Before you remove the caliper from the hole, press the button to zero the caliper while it is set to the diameter of the hole.

2. Still using the inside jaws, measure the distance between the far surfaces of the two holes. The caliper reading is the distance between centers of the two holes.

Chip Shield, Magnetic for 3" - 4" Vise, Clear

Milling machine chip shield uses strong Neodymium magnets to mount to the front or back of a machine
Conveniently remove without the hassle of fussing with tools or screws
Adjustable friction hinges allow setting the side panels at any angle up to 150 degrees
Compatible with any 3"- 4" milling vise with a flat surface on either end
Approximate dimensions: 11 1/4" x 3 3/4" x 1/4"

$39.95

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4 turning tools
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3/8" shank
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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

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