We offer hand refractometer. Hand held refractometer model ge-139 a pocket refractometer designed on the principle of total reflection for measuring the refractive index . The built in occular scale gives direct reading for percentage of sugar density. Packed in a beautiful velvet box. A) sugar scale 0-32% in division of 0.2 % b) sugar scale 0-50% in division of 0.2% c) sugar scale 58-92 % in division of 0.2% d) sugar scale 28-62% in division of 0.2% combined with nd 1.377 to 1.440 for nacl reading.