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.
So they decided to go out and measure, using a clinometer made out of cardboard, a plastic straw, and a plum line.
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.
A clinometer will ensure that you are directly below the edge of the crown.
Clinometers (about $90): For measuring height, slope, and vertical angles.
An Army Corps of Foresters armed with hypsometers, transits, clinometers, and trigonometric calculators?
Foresters usually use Abney levels, clinometers, hypsometers, or transits to determine the height.
Vertical angles--up and down--can be measured with a clinometer that references gravity.
If you are unwilling to spring for the cost of a handheld clinometer, there is another option if you own an iPhone: Several inexpensive apps turn your phone into an accurate clinometer.
Measure it in flight with your clinometer and you'll always have a rough sense of what's realistically within gliding distance.
Then walk up the side of the runway to where you expect to lift off and take clinometer sightings of the surrounding terrain.
A clinometer can be used to judge if a cloud can be topped.