The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 21
has objections which overbalance that consideration. 6.—A T-square of mahogany, at once simple in its construc-tion, and affording all necessary service, may be thus made.Let the stock or handle be seven inches long, two and a quarterinches wide, and three-eighths of an inch thick: the blade,twenty… … Fig. L INTRODUCTION. 7.—The set-square is in the form of a right-angled triangle ;and is commonly made of mahogany, one-eighth of an inch inthickness. The size that is most convenient for general use, issix inches and three inches respectively for the sides which con •tain the right angle; although…
Carpentry · Architecture
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