(A)Thin Sine Bar

Precision Hardened & Ground 3″ Thin bar will fit in bottom of vise and accurately set work piece to desired angle. Can be used for accurately setting swivel vise or angle vise; to set work piece at an angle to T-slot of milling table, back rail of magnetic chuck, and to set milling machine head or down feed on shapes. Multiply 3 x the sine of angle to determine height of gage blocks to set under radius. Two 1/4″ holes are are provided for mounting purpose.

(B)Valve-Line 5″ Sine Bar is a must for all machinist tool boxes for quickly measuring the desired angles in machine setups.

Hardend and precision ground.
Body size 1″.
5″ Distance between centers of rolls within .0003″
Top parallel to bottom of rolls within .0002″
Supplied with back plate.

(C)Precision Sine Bars

Both sine bar and rolls are hardened and ground for extreme accuracy.
Flatness of working surface .0004″ per 4″ of length.
Parallelism of working surface to roll bottom lines .0001″
Center to center distance between center of rolls is accurate within .00007″
There is a flange on the end for resting work.