A meter rule is a measuring instrument used to measure the length of objects. It is a long, straight bar with markings that indicate the length in centimeters and millimeters. Meter rules are typically made of metal or plastic and are available in a variety of lengths, from 1 meter to 3 meters.

Here are some of the objects that can be measured using a meter rule:

• The length of a piece of wood or metal
• The height of a table or chair
• The width of a door or window
• The circumference of a circle
• The distance between two points
• The depth of a hole
• The weight of an object (by using a balance)

Meter rules can also be used to measure other quantities, such as area and volume. For example, the area of a rectangle can be found by multiplying the length by the width, and the volume of a cube can be found by multiplying the length, width, and height.

When using a meter rule, it is important to make sure that the object being measured is placed flat on a surface and that the ruler is held level. The markings on the ruler should be read carefully to ensure accuracy.

Here are some tips for using a meter rule:

• Make sure the ruler is clean and free of dirt or dust.
• Place the object to be measured on a flat surface.
• Hold the ruler level against the object.
• Read the measurement at the zero end of the ruler.
• If the object is too long to be measured on one side of the ruler, move the ruler to the other side of the object and read the measurement from the zero end again.

With a little practice, you will be able to use a meter rule to measure objects accurately.