Overview

• Provides a quick, accurate way for determining the correct drill point angle of 59° and the correct length of drill lips necessary for clean-cut drilling at maximum feeds and speeds
• Sliding head may be adjusted to any position along the rule and locked by thumb nut
• Head is beveled to 59° (the correct drill point angle) and is also graduated in 32nds along the 59° face for measuring the drill lips which should be of equal lengths
• Hook rule has accurate, machine-divided graduations in 8ths, 16ths, quick-reading 32nds and 64ths