PT0478 Protractor Blades
Designed for precision measuring and laying out angles. Satin chrome finish on all reading surfaces. Available with hardened 175mm (7in) or 300mm (12in) blades which rotate to the desired angle and adjust to the required length. Both the blade and the dial lock independently. A convenient ultra-sensitive fine adjustment ensures precision setting. Can be used in conjunction with a height gauge. Furnished in case.
Blade size: 175mm / 7 Inch blade only.