To make observations and draw scale diagrams of cells ... Line it up so that the specimen – if you can see it – is in the centre of the stage, where the light passes through.

Caption: Fossil specimen (left) and diagram (right) of Gangtoucunia aspera preserving soft tissues, including the gut and tentacle. Image credit: Luke Parry and Guangxu Zhang. Disclaimer ...

Line it up so that the specimen – if you can see it – is ... Record microscope images using labelled diagrams - or you could produce digital images. When first examining cells or tissues ...