Digital Hand-held "Pocket" Copper sulfate (S.G.) Refractometer PAL-54S

>about the icons Model PAL-54S Cat.No. 4454 Measurement Range Copper sulfate (S.G.) 1.000 to 1.210 Temperature 10.0 to 40.0°C Resolution Copper sulfate (S.G.) 0.001 Temperature 0.1°C Measurement Accuracy Copper sulfate (S.G.) ±0.002 Temperature ±1°C Ambient Temperature 10 to 40°C Measurement Time 3 seconds Power Supply 2 × AAA Batteries International Protection Class IP65 Dust-tight and Protected against water jets. Dimensions & Weight 55(W) ×31(D)×109(H)mm, 100g Optional • PAL-CASE : RE-39409 • STRAP: RE-39410 Patent for Design Registration No. ZL200310103015.2 (China) Patent for Invention Registration No. ZL03303431.1 (China), 089244 (Taiwan) Registration pending in U.S.A., and Germany and all other countries around the world.