MHC 418-4810 Solid angle Plate 2 x 3-3/8 x 5/16” Angles 45, 45 and 90 degrees

The angle plates are made of Metal with precision ground angles.
The set includes one pieces with 45/45/90 The 45 degree angle plate size is 2 x 3-3/8 x 5/16” 
The plates have four holes of 11/32inch for easy mounting and are 1/4" thick.
The angle plates have precision grounding angles for easy installation in tools, production and inspection.
The angle plates are used for calibrating and measuring the exact angle with high accuracy.