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.

CHAPTER VII.

Chapter 725 wordsPublic domain

THEODOLITES:--Constructive Details of 5-inch and 6-inch Transits-- Special Additional Parts--Old Form with Four Screws--Improved Form--Additional Parts--Plummets--Striding Level--Lamp-- Adjustments over a Point--Solar Attachment--Photographic Attachment 214