No. 11H and 33H Series Combination Squares with square head
Cast Iron Heads:
No. 11H Series
With reversible lock bolt, scriber, spirit level (except 4"), and hardened steel, machine-divided blade with regular or satin chrome finish. Cast iron head with black wrinkle finish.
Forged and Hardened Steel Heads:
No. 33H Series
These squares have the same features as the No. 11 Series except that the square heads are forged hardened steel with smooth, black enamel finish.