• A choice of stable cast iron protractor – reversible is nicely finished with a black durable finish
• Graduation: No. 16R – quick reading 1/32″, 1/64″, aircraft quick reading 1/50″, 1/100″
• With reversible lock bolts, scriber, spirit level in square, center heads and protractor head
• Direct reading double 180 degree protractor scale
• The square, center heads are forged hardened steel and
  cast iron reversible protractor with satin chrome blade, smooth black
  finish

Complete combination set feature the combination square with a center
head and with a reversible protractor. As the name indicates, this tool
can be used for many different purposes – a complete substitute for a
whole set of common solid try squares, a 45 degree miter, a depth gauge,
a height gauge, a marking or scribing gauge, a level, a plumb and, by
withdrawing the blade, it can also be used as a precision rule. This
saves littering the workbench with too many tools, each being necessary
but may be used less. This results in the goal of all good craftsmen –
better accuracy and greater efficiency.