Skip header and navigation
Keystone Mathematical Instruments
- Description
- (A) Green box with "KEYSTONE MATHEMATICAL INSTRUMENTS / Adapted for use with all Geometrical Text Books" on the front. "Gloria Johnston Smithers BC" is written in pen on the front of the box, as well as the bottom of the pull-out part of the box.
(B) Metal protractor
(C) Obtuse triangle-shaped ru…
- Category
- TOOLS AND EQUIPMENT FOR SCIENCE AND TECHNOLOGY
- Sub-Category
- OTHER TOOLS AND EQUIPMENT FOR SCIENCE AND TECHNOLOGY
- Place Of Manufacture
- England
- Description
- (A) Green box with "KEYSTONE MATHEMATICAL INSTRUMENTS / Adapted for use with all Geometrical Text Books" on the front. "Gloria Johnston Smithers BC" is written in pen on the front of the box, as well as the bottom of the pull-out part of the box.
(B) Metal protractor
(C) Obtuse triangle-shaped ruler
(D) Equilateral triangle-shaped ruler
(E) Black parallel ruler - has two individual rulers with two swiveling metal pieces connecting them so that they cn be pulled apart and still stay parallel.
(F) Gold L-shaped ruler
(G) Gold compass
- Number Of Parts
- 7
- Accession No.
- 1981.57.10 a-g
- Type of Record
- Museum Artifact
Less detail
