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 V.

Chapter 526 wordsPublic domain

LEVELLING STAVES:--Construction--Various Readings Discussed-- Sopwith's--Field's--Strange's--Stanley's New Metrical--Simple Construction--Mining Staff--Papering Levelling Staves-- Preservation--Packing Pads--Staff Plate--Staff Level--Practice of Levelling--Index of Bubble--Lamp--Curvature Corrections--Station Pegs--Refinement of Levelling--Levelling Books 148