Franz Widder GmbH
saccharimeters measure the percentage of sugar content in a liquid
http://www.widdernet.de/saccharimeter.html

Wilhelm Keiner
Wilhelm Keiner Aräometerfabrikation, Glass, Quality-Hydrometers (Thermometer, Baume-hydrometer, Saccharimeter, Alcoholometer, Mineraloil-Hydrometer, Brix, API, ASTM, BS718, DIN)
http://www.wilhelm-keiner.com/PRODUKTE.htm

Rudolph Instruments, Inc.
Manufacturer of Polarimeters, Saccharimeters, Ellipsometers and HPLC Columns
http://www.rudolphinst.com/

Rudolph Research Analytical
Refractometer, density meter, polarimeter, saccharimeter and accessories manufacturing, sales and service: J Series of Automatic Refractometers, Autopol Line of Automatic Polarimeter and Saccharimeter Products, and Density Meters - Rudolph Research Analytical.
http://www.rudolphresearch.com/

Optical Activity
Optical Activity Ltd manufacturers of polarimeters, saccharimeters, quartz plates, sample tubes, sample cells for the Confectionery, Food, Beverage, Pharmaceutical, Essential Oil, Agriculture, Education and Sugar Industries.
http://www.opticalactivity.com/