Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 22
Fig. 31—Beam Compass with Pen, Pencil and Needle-Points. with much difficulty. For the draftsmans pur-poses the moist colors in pans will be found themost satisfactory. A box of moist water colors is illustrated inFig. 32. The colors should be kept in a box ofthis kind, which can also be used as a… … Pig. 32—Moist Water Colors in Case. black or red sable and camels hair. Black sablebrushes are too expensive for the draftsmansordinary use.The best grade of camels hair brushes such as are shown in Fig. 33, will be found quite satis-factory for ordinary use. To ascertain whether a brush is of good…
Mechanical drawing · Machine design
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