Three Simple Microscopes, late 19th century, a wooden insect microscope with canted mirror and eyepiece mounted on swing arm, with maker's label "Chicago Apparatus Company," lg. 9 3/4; and two simple screw-adjusted microscopes with three brass feet, ht. 2, 1 3/4 in.
Three Simple Microscopes, late 19th century, a wooden insect microscope with canted mirror and eyepiece mounted on swing arm, with maker's label "Chicago Apparatus Company," lg. 9 3/4; and two simple screw-adjusted microscopes with three brass feet, ht. 2, 1 3/4 in.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
