[Calculating Drawing Magnification of Microorganisms Viewed Through the Microscope]

a. The drawing is roughly 7 cm long. This equates to 70 mm or 70,000µm.

b. The actual size of the organism is about 500 µm.

c. Drawing magnification = drawing size / actual size.

70,000 µm / 500 µm = 140 X

Drawing Magnification = 140 X

Slichter