Refractometers, hand-held, precision, MASTER-53T
For simple, manual measurement of concentrations and refractive indices of liquids. Hand-held, precision refractometers with focussing eyepiece, soft rubber eyecups (to reduce straylight ingress, also spectacle lenses do not slip off and are not scratched), case and conversion tables. Hand-held refractometers cannot be fitted with a thermostatic controller and so measurements have to be temperature compensated.

Models with extra code M: Basic model
Models with extra code T: with automatic temperature compensation (ATC)
Models with extra code a: with automatic temperature compensation (ATC) and protection class IP65

Specifications
Type MASTER-53T, for sugar 
Measuring range: 0,0 - 53,0 % Brix (Automatic Temperature Compensation)
Accuracy: ±0.2% Brix (at 20℃)
Minimum scale: 0.2 % Brix 
Repeatability: Brix  ±0.1% (20℃) ATC
Dimensions & Weight: 3.2 x 3.4 x 16.8cm, 130g