This little microscope is under 2 inches. An early  microscope bottom of black is etched in Bausch & Lomb Optical Co Rochester N.Y. Pat Jan 8 ’78. Box shows some wear and top says American Agriculturist Microscope from Orange Judd Company, 245 Broadway, New York.
HISTORY OF THE AMERICAN AGRICULTURALIST MICROSCOPE (From:http://www.microscope-antiques.com/ag.html)
Starting in 1877, the American Agriculturalist Magazine advertised this diminutive instrument. It was touted as an aid to the farmer in detecting contamination and deterioration of e.g. seeds. It could also be used by children to explore the little things around us. The earliest version is labelled with a ‘PAT. APP’D FOR’ whereas shortly later, the patent date was added; this patent date as stated on the slightly later instruments, is Jan 8, 1878. This is patent number —– issued to J.J. Bausch.

The Orange Judd company address, as given in the 1877 through 1880 editions of the American Agriculturist was 245 Broadway, the address on this. Starting in 1881, the address had changed to 751 Broadway, the address on the green box.

Bid Here: American Agriculturist Orange Judd Antique Microscope Bausch & Lomb