What are the instruments for measuring length?

The instruments for measuring the length are:

1, vernier caliper

A measuring tool for measuring length, inner diameter, outer diameter and depth. The vernier caliper consists of a main ruler and a sliding vernier attached to the main ruler. The main ruler is usually in millimeters, while the cursor has 10, 20 or 50 scales.

2. Scale

As a tool for measuring the length of an object, the dividing value of the scale is generally 1mm, and the students' measuring range of general specifications is 10cm, 15cm and 20cm.

3. Tape measure

Measuring tools commonly used in daily life. What we often see is a steel tape measure, which is often used in construction and decoration, and is also one of the necessary tools for families. Divided into fiber tape measure, tape measure, waist measure and so on. Lu Banchi, Feng Shui ruler and secretary also belong to steel tape measure.

4. Laser rangefinder

An instrument for measuring the distance of a target by using a certain parameter of a modulated laser. The measuring range of laser rangefinder is 3.5 ~ 5000m.

5. Screw micrometer

A tool for measuring length more accurately than vernier caliper can measure length as accurately as 0.0 1mm, and the measuring range is several centimeters.