600 MM Folding Rule With Angle Calculation Chord - Model 1211?
This 600mm folding rule is made of hardened & tempered stainless steel material and incorporates a scale from 0oto 120oin increments of 1/2o Two Center Dots are provided, one on each blade and with the aid of dividers, the ruler can be set at any angle, or an existing angle can be determined with the line of chords.