Universal Right Angle Plate 5-1/2x8x10" smi-steel castings accurate ground Universal Right Angle Plate 5-1/2x8x10" smi-steel castings accurate ground Made of fine quality, fine grained semi-steel castings, stress relieved against distortion by proper heat treatment. All surfaces closely finished for square and parrallel references. Ground finish: 0.0005' per 6" 5-1/2"(L)x8"(W)x10"(H) Weight: 36 lbs