Rudolph's J457 Automatic Refractometer is available in a Standard, Factory & Wall-Mount Configuration.
One of the most capable and advanced digital, bench-top refractometers available for use in modern laboratories today. The Rudolph Research J 457 offers exclusive, Dual Peltier Heating and Cooling for effective temperature control, rugged easy to clean prism, shallow sample well, and several industry specific configurations. Unquestionable accuracy, easy to use, rugged design.
For additional information see
http://www.rudolphresearch.com