The Starrett Satin Chrome Protractor C182 is a precision layout tool built around the same round head design as our Shinwa No.19 protractor, though the two are set up for rather different trades. Where the Shinwa is intended for marking out on timber, the C182 is designed for draftsmen, civil engineers and others who need to draw any number of radial lines at any angle through a common centre, making it especially useful for anyone working in the field who can only carry a minimum of equipment.
To use the protractor, the fulcrum point is pressed into the drawing at the required centre. This is done by removing the fulcrum point from the hub, pressing it in the drawing, and then placing the protractor hub over the fulcrum point. The desired angles can then be laid out.
The fulcrum point can be left in the tool. Press the whole tool down so that the point penetrates the drawing. (However, this will make it harder to nd the centre.) When not in use, the fulcrum point can be drawn back into the hub and frictionally held in a safe position.
Range: 0-180°
Blade Length: 6 in (150mm)
Finish: Satin chrome for ease of reading and resistance to rust
Head Shape: Round
Fittings: Furnished with one needle point and one cone point
Weight: Approximately 3 oz
