Caption:
Type of microscope was invented and used by Anton van Leeuwenhoek. Antonie Philips van Leeuwenhoek (October 24, 1632 - August 26, 1723) was a Dutch tradesman and scientist. He is known as "the Father of Microbiology", and considered to be the first microbiologist. he constructed all his own equipment using lenses he had made himself. At his death, Leeuwenhoek left 247 microscopes and 172 lenses. Only 9 microscopes have survived. These can magnify up to 200 times and were of a better quality than professionally made microscopes of the time. The specimen to be studied is placed on the pin and is brought into focus on the small lens by adjusting the two screws. The glass lens is fixed between two brass plates. The microscope would have been difficult and uncomfortable to use as the eye would have to be placed very close to the lens to make any observations. Lighting the specimen would also have been difficult. Unknown maker. Leiden, South Holland, Netherlands.