Microscope Parts And Tests

Question 1

What is the eyepiece graticule?

Answer 1

A transparent piece of glass with a ruler etched on it added to the eyepiece of a microscope

Question 2

What is the stage micrometer/ graticule?

Answer 2

Used to work out how much each division is worth on the eyepiece graticule

Question 3

How do you calculate the distance of each eyepiece division?

Answer 3

Distance on stage micrometer (um) / number of eyepiece divisions

Question 4

How can you use an eyepiece graticule and stage micrometer to measure the size of a structure?

Answer 4

•place micrometer on stage to calibrate eyepiece graticule
•line up scales on graticule and micrometer
•count how many graticule divisions are in the micrometer
•length of one eyepiece= 100um/number of divisions
•use calibrated values to calculate actual length