Torque angle gauge

•Angular scale 0° to 360° •Locking screw •With 1/2" internal square drive •With 1/2" external square drive •Includes Allen key The BRILLIANT TOOLS rotation angle measuring device BT546001 is indispensable for professionally installing and precisely maintaining the angles when building, repairing and restoring engines. The rotation angle measuring device is for tightening cylinder head screws with the ratchet or torque wrench to the precise angle. With the two 1/2" drives, it is pluggable between the ratchet and extension or socket. There is a knurled locking screw for fixing the angle indicator.