A protractor is used to draw and measure angles. An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be labelled with 3 letters (eg DEF) to ...

Also included are two slots for drawing angles of 30° and 45° and templates for an equilateral hexagon and two closed curves. On the curve the object is marked: SP [/] PROTRACTOR – FRENCH CURVE – ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. See also ID number 1977.0460.01.