Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)
Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 325
Fig. 6. 2. Logarithmic and Semi-Logarithmic Papers. In sheets of various sizes ; and with instructions for using. 3. Polar Degree Paper. Diameters of circle 10 cm. and 30 cm.Protractor Papers. Diameter of circle 20 cm. 296 SECTION H 4. Triangular Papers. Sides of triangle 20 cm. and 50 cm. … CS1S No. 3 IS. 4 OesetzJich geschutti Fig. 7. 5. Charts. (a) Year and ten-year charts in lengths of 71 cm. (b) Charts with various rulings. 6. Ruled Tracing Papers. In sheets 20 X26 cm., of different colours and textures, and withvarious rulings. 7. Drawing Pads as follows :— One pad each…
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