"Nachet's Combined Simple and Compound Microscope." —The Encyclopedia Britannica, 1903

Compound Microscope

"Nachet's Combined Simple and Compound Microscope." —The Encyclopedia Britannica, 1903

An apparatus for figuring out the number of corpuscles in a quantity of blood.

Haemacytometer

An apparatus for figuring out the number of corpuscles in a quantity of blood.

An apparatus for figuring out the number of corpuscles in a quantity of blood.

Thoma-Zeiss Haemacytometer

An apparatus for figuring out the number of corpuscles in a quantity of blood.

"Nachet's Portable Compound Microscope." —The Encyclopedia Britannica, 1903

Portable Microscope

"Nachet's Portable Compound Microscope." —The Encyclopedia Britannica, 1903

"Nachet's Portable Compound and Dissecting Microscope, as packed in case." —The Encyclopedia Britannica, 1903

Portable Microscope

"Nachet's Portable Compound and Dissecting Microscope, as packed in case." —The Encyclopedia Britannica,…