The stage measures 9 x 6.5 cm with a 40 mm center hole.Focusing is by rack and pinion movement of the stage using a single milled brass pinion knob.
The photos show the microscope set up in horizontal, vertical, inverted (chemical), and simple microscope configurations.There is an empty rectangular compartment that might have contained a stage micrometer. In the 1883 edition of The Tech, the newspaper of the Massachusetts Institute of Technology, an advertisement appeared by Wm. 1890 (but probably pre-dating 1883), and described as a Bardou type is known to have been recently sold.The top tray of this draw can be removed relieving a storage space below, now empty. It is not certain exactly when the firm went out of business. bds 26 West Cedar and indicates an association with J. FAQ for information about file content and naming conventions.Document number CIA-RDP80T00246A041100850001-1 declassified and released through the CIA's CREST database.