|
Showing 1 - 4 of
4 matches in All Departments
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.
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.
|
You may like...
LSD
Labrinth, Sia, …
CD
R213
Discovery Miles 2 130
|