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 IX.

Chapter 920 wordsPublic domain

PLAIN THEODOLITES IN WHICH THE TRANSIT PRINCIPLE IS NOT EMPLOYED:--The Plain Theodolite--Improved Construction--Everest's Simple--Adjustments and Examination of Theodolites 267