Key to Chisholm's mathematical mechanical scale
Subtitle: an instrument for solving all problems in arithemetic, geometry, and trigonometry, right-angled and oblique, plane and spherical : without the aid of tables, except those of latitude and longitude
By: by A.M. Chisholm.
Publisher: Printed by J. Bowes
Place of publication: Halifax, N.S
Language: eng
Subjects: Mathematics -- Formulae
Notes: In triple columns.

Includes table mounted on board.

"Chisholm's assisting index & protractor": on back inside cover.