CHAPTER XV.

GRAPHIC SURVEYING INSTRUMENTS AND APPLIANCES CONNECTED

THEREWITH:--Plane Tables--Alidades--Telescopic Arrangements--

Subtense Measurements--Various Devices for Holding the Paper--

Continuous Papers--Adjustment of Tripod Heads--Method

of Using--Edgeworth's Stadiometer--Sketching Protractor--Sketching

Case--Camera Lucida, etc. 472

Surveying and Levelling Instruments, Theoretically and Practically Described. For construction, qualities, selection, preservation, adjustments, and uses; with other apparatus and appliances used by civil engineers and surveyors in the field. · 第 15 / 26 章