Pal-Patissier Refractometer, 4-19/64"L x 1-7/32"W x 2-11/64"H, temperature range: 10F to 104F (10C to 40C), measures: 0 to 85% Brix / 0 to 45 Baum, precision: 0.2% Brix / 1 Baum, 3-second digital readout, monitor sugar content in sorbet, ice cream, jam, jelly