Microscope measurements

Question 1

For a microscope that uses light, what measures the size of objects?

Answer 1

An eyepiece graticule, this is a glass disc that is placed in the eyepiece of a microscope. There is a scale etched on the glass disc.

Question 2

Why must the eyepiece be calibrated?

Answer 2

To ensure the scale stays accurate.

Question 3

How do you calibrate an eye piece?

Answer 3

you need to use a special microscope slide called a stage micrometer, this slide also has a scale etched onto it.