Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 68
enboundary line of the field. This necessitates occasional offsetsbeing taken, to the right or left as may be required, and theseoffsets are measured by what is called an offset-staff, a roundwooden rod, usually 10 links in length. The offsets are enteredin the field-boolv by taking a separate… … 50 INDUSTRIAL DRAWING AND GEOMETRY 106. To find the Area of a Rectilinear Enclosure in Sc[uare Feet.—Let Fig. 147 be the enclosure, with the measurements in feet/tabulated in the field-book as in Ai-t. 105. Then we have : — Field-book. Feet. ToD 140 120 C35 E40 90 30 B50 From A Calculation op Abea.…
Mechanical drawing · Geometrical drawing
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