Sine Vises, Bars & Plates

Angle Calculations, Sine Vises, Gage Blocks, Sine Bars, Sine Plate

Sine vises & bars allow quick & very accurate angle setting using precision spacer blocks.
The distance between the roll centers is quite accurate as are the other dimensions.
All of these sine vises & bars were hardened then precision ground to close tolerances.

Angle Calculations

Required spacer size" = Sine (Desired angle°) x Distance between rolls"

Resultant Angle° = Arcsine (Spacer size" / Distance between rolls")

Note, the calculator must be set to degrees not radians (rads).

For example, if you need to set a 30º angle & the distance between the rolls is 5.0000",
calculate the sine of 30º & multiply by 5.0000". The size of the spacer is exactly 2.5000"
 Sine bars are used in the same manner. For a given length sine bar & spacer block size
 you can also calculate the resultant angle. This calculation is analogous to that for tapers.

Sine Vises

2-in & 3-in wide sine vises; both are 4" between rolls. Sine vise instruction manual. See more vises.

Gage Blocks

81 piece, Grade B, rectangular precision gage block set, from 0.050 to 4.0",  ±0.000050" at 20°C (68°F).

Low-cost spacer gage set.

Sine Bars

3" between rolls sine bar that is only a ¼" thick.
Using the formula, the sine bar angle is at 7.594643369º or 7º 35' 40.72"

Assorted types & sizes (3" & 5" between the rolls) of sine bars.

Sine Plate

¼-20 flathead screws can be used to hold certain types of parts to the plate. 5" between rolls & hardened.

Angle Calculations, Sine Vises, Gage Blocks, Sine Bars, Sine Plate