The gardener's magazine and register of rural & domestic improvement (1826)
Loudon, J. C. (John Claudius), 1783-1843, A. & R. Spottiswoode, printer, United States. Patent Office. Scientific Library, former owner DSI · London : Longman, Rees, Orme, Brown and Green · leaf 289
lose upon thetree. J, Movable joint. g g, Semicircular guide of iron or brass, to fix the scale andtangent arms square, to gauge branch wood. On Measuring grcming Timber. 265 hf Socket of iron or brass, with a screw cut on the inside, for infixing a rod of any length required. Fig. 38. shows a… … the cords are drawn; also a cross spring {i i) at the neckof the movable tangent arm, to keep it steady and erect; and ascrew {k) for fastening the arms of the gauge either square or atany angular position required. Fig. 39. shows a different horizontal view of some of theparts as above described.…
