Squares & protractors

Angle meters and protractors allow tmeasure the angle of inclination of different units teach other. They are necessary when mounting parts which must be placed at a certain angle.

Types of angle meters

By the way the information is displayed:

• Mechanical. Such tools are often cheap. You can read the results on a scale. Models with a vernier scale provide more accurate results.
• Electronic. They are equipped with a display which shows measurements.

By design:

• Laser. Measurements are made by directing beams at objects. It might be difficult tsee these lines under a bright light.
• Optical. They are fitted with a zoom lens which helps tget the results as accurate as possible.
• Pendulum. They calculate the angle of inclination of a unit from the horizon. They function due ta gyroscope which holds its position when the device is rotated.
• Measuring tools with a indicated angles. Used tcompare an angle with the reference value.
• Combination sets. For instance, it can be an electronic device with a laser.

Types of protractors

They can be circle and half circle. The first type is suitable for measuring angles up t360 ° and the second ones measure up t180 °. Apart from that, tools presented in the catalogues differ from each other:

• By an arched part. It can be either solid or with a hole.
• With or without a scale on the straight part. Tools fitted with it allow tmeasure not only angles but linear dimensions of a spare as well.

Angle meters and protractors: maintenance tips

1. Follow the manufacturer’s recommendations while working. In particular, dnot leave electronic devices switched on when not in use, timely replace batteries in them.
2. Examine the tool for damage. Dnot use it if there are scratches or any other defects on it. This affects the accuracy of the readings.
3. Protect the tools from hits and moisture. It is recommended tstore and transport them in cases or covers which are usually supplied with them.

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