Description, Adjustments and Methods of Use of the Six-Inch Micrometer Block Survey Reiterating Transit Theodolite 1912 Pattern (Classic Reprint) - Hardcover

William Henry Herbert

9780266416746: Description, Adjustments and Methods of Use of the Six-Inch Micrometer Block Survey Reiterating Transit Theodolite 1912 Pattern (Classic Reprint)

Hardcover

ISBN 10: 0266416748 ISBN 13: 9780266416746

Publisher: Forgotten Books, 2018

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Master the art of precise observation with a classic 1912 surveying instrument.

This guide explains how to set up, adjust, and use the Six-Inch Micrometer Block Survey Reiterating Transit Theodolite pattern to measure azimuth, time, and longitude with careful, repeatable methods.

The material walks you through practical steps for field setup, including tripod placement, level adjustments, and aligning the diaphragm and micrometer. It covers how to operate the instrument’s lamps and rheostat, how to read and reverse the micrometer, and how to manage observations in both circle east and circle west positions. The text also details how to handle time and latitude observations, and notes the importance of minimizing parallax and instrument flexure for accurate results.

How to position the tripod and levelling screws for stable work on different ground
How to adjust the micrometer diaphragm, align the vertical and transverse threads, and use the rheostat lighting
Techniques for azimuth observations through various reading methods and reiteration
Procedures for observing latitude, time, and longitude with attention to accuracy and safety of the instrument

Ideal for readers of historical surveying manuals and technicians seeking a window into early 20th‑century measurement practice.

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