This is a Tinknocker 1652 Foot Shear! With 60IN squaring Arm, 24IN back gauge, Front sheet support. Everything you need to cut up to 52 IN width and 16GA mild steel capacity. 
 
Specifications:
Weight: 1215 lbs
Dimensions: 60 x 34 x 42 in
Capacity: 16 Ga Mild Steel
Shearing Length: 52″
Back Gauge: 25″ with Engraved Rule
Floor Space: 60″ x 72″