Mechanical drawing for plumbers; a concise, comprehensive and practical treatise on the subject of mechanical drawing (1910)
Starbuck, R. M. (Robert Macy), 1844-1927 · New York, The Norman W. Henley publishing co. · leaf 12
and verticallines are made along the edge of the tri-angle held against the edge of the teesquare. With triangles which are true,this insures true work, but if the verticallines are made by holding the tee squareagainst the lower edge of the board, thereis very little chance of the work being… … Fig. 2 drawing as the plumber, the machinist,or the architect would need, it is neces-sary to understand the principles of pro-jection which in reality underlies thewhole subject. All working drawings,which show several views of the same ob-ject, such as are usedin every machineshop, are worked out…
Plumbing · Mechanical drawing
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