for looking closely

 
 
Microscopes from The Golub Collection

From top:
All brass compound microscope. Likely made in northern Italy, c. 1675. 
Turned ivory microscope. Probably made in Italy, c. 1690 - 1700.
Wooden simple microscope. Likely made in Italy, c. 1700 -1725.
Culpeper double-reflecting microscope. Made in England, c. 1735 -1738. Maker: George Culpeper. 
Compound microscope. Made in England,  c. 1785, made by George Adams, Jr., the maker of the famous George III microscope (currently on view at the Yale Center for British Art).
Chevalier Universal Microscope. Made in France, c. 1840. Maker: Charles Chevalier.
White metal compound microscope. Possibly made in France, c. 1900.