A treatise of such mathematical instruments as are usually put into a portable case, containing their various uses. In arithmetic, geometry, trigonometry, architecture, surveying, gunnery, etc., with a short account of the authors who have treated on the proportional compasses and sector. To which is now added an appendix containing the description and use of the gunner's callipers / [J. Robertson].

Licence: Public Domain Mark

Credit: A treatise of such mathematical instruments as are usually put into a portable case, containing their various uses. In arithmetic, geometry, trigonometry, architecture, surveying, gunnery, etc., with a short account of the authors who have treated on the proportional compasses and sector. To which is now added an appendix containing the description and use of the gunner's callipers / [J. Robertson]. Source: Wellcome Collection.