Johnston, Philip Devereux, 1855- · New York, D. Williams Company · leaf 33
. Side AB. L = P X side AB.Side BC. Law.—The power is to the load as the heightof the wedge is to its base. These laws are ofno practical value beyond the fact shown: that theefficiency of the wedge or its power increases with itsthinness. The reasons for this are that the power is applied not by… … A MANUAL Of MrCCIIANICAI. DRAWING. 29 TABLES. TABLE I. Decimal Parts of an Inch FOR Each ^jTH. Frac- Frac- Frac Frac- tion. Ads. ^ifhs. Decimal. t.on. ■hds. ^iths. Decimal. tion. ^rfs. ^itlis. Decimal. tion. Arf«. ^fths. Decimal. I 015625 17 265625 33 515625 49 765625 I 2 03125 9 18 28125 17 34…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-1217-540.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-129-44.webp)
