Johnson 400 Metal Combination Square, 12" Indoor Carpet Tape Features a locking pin to

Features a locking pin to hold the outer tube in place

Heat absorbing metal bead on element link for time delay

Assembled height: 3-3/4"

It's unique

External collar for use with standard pneumatic hammers

Johnson 400 Metal Combination Square, 12" Indoor Carpet Tape Features a locking pin toA combination square is a vital tool for performing the most basic shop operations, such as layout, marking, measuring, and machinery setup. Its versatility is unparalleled by any other single tool. The two main components of a combination square are the head and the blade? what manufacturers call a two piece set? and that's all you get with most of the lower priced tools. In the higher price brackets, the major brands offer center heads and