All You Need to Know about Inclinometers

An inclinometer is a device designed to measure the tilt of an angle in both vertical and horizontal angle measurements. It is an excellent tool for surveyors, miners, engineers, geologists, cartographers, satellite installers, architects and anyone who needs to measure directional indications, vertical angles, heights and slopes with speed and accuracy.

The device consists of an inclinometer measurement system and an inclinometer casing. The case is what provides contact for sub-surface measurements and the measurement system controls the orientation of the sensor to provide a uniform surface for measurements.

Types of Inclinometer

Before you buy inclinometer, it is important to get familiar with the different types available and their functions. Inclinometers are commonly divided into two categories: inclinometers that use a spirit vial and inclinometers that use a gravity-actuated pendulum or other indicators. Modern models can come with various technologies. Below are some examples of inclinometers in combination with different technologies.

Manual Inclinometer

Also called the gas bubble type, this is the oldest model of inclinometers. The device comes with a glass tube with liquid and air bubble inside. As the device moves, the bubble stays level, and its position indicates the incline angle on a scale.

Electronic Inclinometer

Those considering to buy inclinometer may want to choose an electronic model as it provides very precise readings of angles. This type uses an internal gyroscope to measure the direction of gravity's pull, that remains in one position no matter the orientation. A solid object is found along the gyroscope and the angle between these two is determined via the inclinometer and displayed on an electronic readout.

Mercury Inclinometer

A model similar to the electronic inclinometer but that uses mercury liquid instead of the gyroscope.

Gravity Inclinometer

This model features a rotating scale and fixed points. The scale is driven by an internal pendulum weight, with is fastened to the back and suspended from a bearing. Two buttons are available on the instrument and they can be pressed so as to lock the scale firmly in place to allow an easy reading.

Operating an Inclinometer

Care should be taken while setting up your device to take readings to ensure that all the parts are checked for bearing free play and tightened if necessary. You may also need to apply a lubricant to the bearing assemblies. Cable connectors should all be protected with caps to prevent damage or contamination to the connector contacts. The readout unit will display values with polarity matching the given tilt angles and a basic trigonometry can be used to interpret the reading.