Measuring Instrument for Measuring Standing Timber and the like.

Реферат: 14,211. Smith, J. July 12. Surveying-instruments, for measuring timber &c. -A sighting-tube or telescope B is mounted at an angle of 45‹ with a level A. To measure standing timber, say, the top is sighted, and the distance then measured to the bottom of the tree to give its height. By means of a screw H, the telescope may also be adjusted about a pivot at its lower end, to measure widths by means of a pointer E working against a scale.