The standard piece of apparatus used to measure distance in the laboratory is what?

The standard piece of apparatus used to measure distance in the laboratory is a ruler or a meter stick. This instrument is typically made of a straight, graduated strip of metal or plastic with markings along its length, allowing for precise measurement.

To measure distance using a ruler or a meter stick, follow these steps:
1. Place the ruler or meter stick alongside the object or distance you want to measure.
2. Align one end of the ruler with the starting point of the measurement.
3. Observe the zero mark on the ruler, which corresponds to the starting point.
4. Look at the marking on the ruler that aligns with the endpoint of the measurement.
5. Note the value indicated by that marking, which represents the measured distance.

Some rulers or meter sticks may have smaller divisions between the main markings, enabling more precise measurements. In such cases, you can use these smaller divisions to obtain more accurate measurements by reading and interpreting them accordingly.

It is essential to handle the ruler or meter stick carefully and ensure that it is laid flat against the object or distance being measured to obtain accurate results.