Portland Navigational Triangle 230mm
Features protractor markings and compass points with reciprocals in red
Scale in millimetres
Manufactured from strong acrylic
Portland Navigational Triangle 230mm
Features protractor markings and compass points with reciprocals in red
Scale in millimetres
Manufactured from strong acrylic
Can be used in pairs as a Parallel Rule
Also available in 230mm
Divided with protractor markings (double reading) and compass points
Manufactured from high quality 6mm acrylic
Bevelled on all four edges with solid brass links
All other metallic parts are manufactured from non-corrosive materials
Rubber pads are fitted to the underside to prevent slipping