Portable Field Microscopes

	1921 Spencer Portable Microscope Model 60H		1940 Tiyoda Field Microscope
	1924 E. Leitz, Wetzlar “Minor” Compound Pocket Microscope	empty	1970 Open University McArthur Microscope  (manual - Adobe reader)
	1924 Hensoldt, Wetzlar “Tami” Extensible Pocket Microscope	empty	1970 American Optical Military Microscope
	Late 1960's Nikon H Portable Field Microscope (manual - Adobe reader)		1974 TWX-1 Portable Field Microscope (manual - Adobe reader)
	Late 1960's Nikon H3 Portable Field Microscope (manual - Adobe reader)		1983 Swift FM-31 Field Microscope (manual - Adobe reader)