Unmarked Pulfrich Refractometer 15" X 5" Wheel $300obo
Pulfrich refractometer
Unsigned, but made by Max Wolz, Bonn
Brass and black painted cast iron Pulfrich type refractometer (height 15in, circle diameter 5in).
Unsigned, but made by Max Wolz, Bonn, late 19th century.
It resembles one I found with Google search. Appears to be complete but it is what it is. It weighs approximately 10 pounds.
Ask any necessary questions before bidding.