By simple operation that only needs to set the boundary line of refraction at the cross hairs, this refractometer directly indicates a measured value (in refractive index or Brix scale) in digits together with temperature on the display. This refractometer enables non-expertised people to carry out measurements easily. The DR-A1 Digital Abbe Refractometer can now be connected to a printer and computer. Individual measurements and their average values as well as temperature readings can be printed or transmitted to a computer. Dispersive value cannot be measured by this refractometer.