These rules incorporate a scale from 0°- 120° in ½° . Two centre dots are provided, one on each blade and with the aid of dividers the rule can be set at any desired angle or an existing angle can be determined. Made from rustless steel. Length 600mm/24in.
Strengths
Metric imperial is subdivided in mm, figured every 10mm in mm one side, subdivided in inches in 16ths on the other sideMetric version subdivided in mm, figured every 10mm in mm on both sidesSubdivided in mm and line of chords scale, one side, subdivided in mm and circumference scale in mm, other side