Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 18
Fig. 4. … (6) A Triangular Boxwood Scale graduated as follows:4 and 2, 3 and ij, 1 and J, f and f, A and A. (7) 1 Triangle 3o°x6o°, celluloid, 10 long. Fig. 4. 1 45°, 7 MECHA NIC A L DRA WING. (8) i Irregular Curve. No. 13. Fig. 5. (9) Emery Pencil Pointer. (10) Ink, black waterproof. Fig. 7. (11) Ink…
