clinometer

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clinometer

[klə′näm·əd·ər]
(engineering)
A hand-held surveying device for measuring vertical angles; consists of a sighting tube surmounted by a graduated vertical arc with an attached level bubble; used in meteorology to measure cloud height at night, in conjunction with a ceiling light, and in ordnance for boresighting. Also known as Abney level.
A device for measuring the amount of roll aboard ship.

Clinometer

 

a very simple geodetic instrument that is used to measure the slope angles of a terrain. A typical clinometer (see Figure 1) consists of a circular metal casing (1) and a sighting tube (2) that is fastened to the casing. The casing contains a graduated disk (3) on a spindle; attached to the disk is a weight that hangs

Figure 1. A clinometer

plumb, keeping the disk in a constant position. Other forms of clinometers are also available. The precision with which slope angles are determined by means of a clinometer does not exceed 0°.2.

clinometer

An instrument for measuring vertical angles.

clinometer

clinometer
Closed-end curved glass tube filled with a liquid similar to kerosene and enclosing a round glass ball. It may be used as a leveling device or in a turn and slip indicator to indicate the relationship between the force of gravity and centrifugal force in a turn.
References in periodicals archive ?
While it's possible to measure the height of a tree from the ground, dropping a line from the very top gives a much more precise measurement than using a clinometers or even a laser.
To meet assumption (3), that perpendicular distance measurements are exact, we utilized both rangefinders with built-in clinometers and GPS units to determine perpendicular distances to moose groups.
An Army Corps of Foresters armed with hypsometers, transits, clinometers, and trigonometric calculators?
Two Accustar[R] II/DAS 20 Dual Axis Clinometers with a 20 degree range, [+ or -] 0.
Foresters, arborists, and serious Big Tree hunters dedicated to accurate heights use clinometers or transits to measure angles; a tape measure or infrared laser rangefinder to measure distances; and scientific calculators and simple trigonometric formulas to crunch the numbers.
Once a week the high school juniors teach the youth of North Carolina's Wake County Girls Club to build clinometers and calibrate global positioning systems while surveying and digitizing the trees that comprise the Club's grounds.