The Line of Chords Scale rule incorporates a scale from 0° to 120° in 1/2º increments.Two centre dots are provided, one on each blade and, with the aid of dividers, the rule can be set at any angle, or an existing angle can be d...

Clear black graduations with solid metal hinges and tips. Graduated cm/mm one side and inches on the other. Manufactured to EC Class III Accuracy Contents: 1 x Folding Wood Rule, 2m...

Manufactured from tough, impact resistant ABS plastic with clear graduations of cm/mm one side and 1/16"/inches on the other. Contents: 1 x Plastic Folding Rule, 1m...