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The Abney Level Handbook: How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and... The Abney Level Handbook: How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and Beginners, Complete with Diagrams & Charts (Hardcover) (Hardcover)
Hartley Amasa Calkins, Y. B. Yule
R696 Discovery Miles 6 960 Ships in 10 - 15 working days

This official handbook of the U.S. Forest Service explains how to use the Abney hand level, a clinometer tool used to measure angles in various natural environments. The Abney tool was invented by William de Wiveleslie Abney during the 1870s. By the time the device was recognized and widely-used in the early 20th century, it had been refined. Though earlier guides cover its basic usage, this U.S. government commissioned handbook offers demonstration and instruction on the tool's abilities. Hartley Calkins and Y. B. Yule were themselves experienced surveyors with experience traversing and measuring the rugged woodlands of North America. The Abney level is used to this day by surveyors, geologists, foresters, and safety inspectors; in good hands, it is reliable for its accuracy. At roughly $60-100 in price it is affordable, durable, lightweight and portable. The Abney Level Handbook, first published in 1927 and expanded in 1935, remains the authoritative source as it covers the subject superbly.

The Abney Level Handbook (Paperback): Hartley Amasa Calkins, James Blaine Yule The Abney Level Handbook (Paperback)
Hartley Amasa Calkins, James Blaine Yule
R389 R356 Discovery Miles 3 560 Save R33 (8%) Ships in 10 - 15 working days
The Abney Level Handbook: How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and... The Abney Level Handbook: How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and Beginners, Complete with Diagrams & Charts (Paperback)
Hartley Amasa Calkins, Y. B. Yule
R325 Discovery Miles 3 250 Ships in 10 - 15 working days

This official handbook of the U.S. Forest Service explains how to use the Abney hand level, a clinometer tool used to measure angles in various natural environments. The Abney tool was invented by William de Wiveleslie Abney during the 1870s. By the time the device was recognized and widely-used in the early 20th century, it had been refined. Though earlier guides cover its basic usage, this U.S. government commissioned handbook offers demonstration and instruction on the tool's abilities. Hartley Calkins and Y. B. Yule were themselves experienced surveyors with experience traversing and measuring the rugged woodlands of North America. The Abney level is used to this day by surveyors, geologists, foresters, and safety inspectors; in good hands, it is reliable for its accuracy. At roughly $60-100 in price it is affordable, durable, lightweight and portable. The Abney Level Handbook, first published in 1927 and expanded in 1935, remains the authoritative source as it covers the subject superbly.

The Abney Level Handbook - How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and... The Abney Level Handbook - How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and Beginners, Complete with Diagrams & Charts (Paperback)
Hartley Amasa Calkins, Y. B. Yule
R241 Discovery Miles 2 410 Ships in 10 - 15 working days
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