1877 Heath's Microscope
For your consideration:
Heath's Improved Adjustable Compound Microscope was primarily marketed to be used in conjuction with Labon Heath's book, "Heath's Counterfeit Detector at Sight," used to detect countfeit banknotes.
The book is not included.
Heath's Microscop is a magnifier/magnifying glass, when folded up it is approximately 4 inches in length.
Marked on the inside of one leg "Pat. Dec. 25, 77."
The lenses inclusing the frames are 1-3/4 inches in diameter.
Both lenses are in very good condition.
The metal frame has innumerable small spots of surface deterioration and shows overall light wear.