Large concave and convex spherical mirrors are standard pieces of demonstration apparatus, and few of them have survived in apparatus collections. 

   At the left is a mirror from the United States Military Academy at West Point. It was bought from Lerebours of Paris about 1830. The upright, reduced images tells us that this is a convex mirror.

   The unmarked convex mirror at the right is in the Garland Collection of Classical Physics Apparatus at Vandervilt University. 

   The two concave mirrors below were made by Max Kohl and are in the apparatus collection of
Case Western Reserve Unviersity in Cleveland, Ohio.

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