Maximum and minimum thermometers were taken along to keep a record of the daily temperature, and I also took with me a box of drawing and painting materials, as well as all kinds of instruments for map-making, such as protractors, parallel rules, tape rules, section paper, note-books, etc.
"An Explorer's Adventures in Tibet"
A. Henry Savage Landor
So a little ingenuity will enable any one to make from cheap protractors about as satisfactory instruments as the world used before 1600. In order that this may be the more fully appreciated, a few illustrations are here given, showing the old instruments and methods used in practical surveying before the eighteenth century.
"The Teaching of Geometry"
David Eugene Smith
Compasses, T-squares, rulers, protractors, and ellipsographs obeyed the touch of his fingers as if inspired with life.
"The Second Deluge"
Garrett P. Serviss