New Palm Abbe Digital Refractometer 
Laboratory Precision in the Palm of Your Hand! 
5 Scale: Refractive Index nD, Propylene Glycol % v/v, Propylene Glycol Freeze Point 'F, Glycerin % v/v, Glycerin Freeze Point ;F. 
The Palm Abbe refractometer is fast, convenient, and easy to use. Simply place a drop or two of fluid in the titanium well and press a button. 
The custom-designed microprocessor delivers a nearly instantaneous readout on one of five different scales. 
There are literally hundreds of different units of measure and scale combinations to choose from. 
Read directly in the unit of measure of interest to you. 
Nonlinear temperature compensation is automatic and insures that fluids read between 0 and 50 °C (+32 to 122 °F) are measured accurately. 
Calibration is automatic and does not require the use of special calibration solutions, or tools. 
The Palm Abbe refractometer automatically calibrates itself to water and is ready to use in seconds. No more screws to turn and nothing to adjust.
The large dual-line LCD display is easily read, even in dim light, and removes the subjectivity associated with interpreting where a boundary line crosses tiny scale divisions. And, it is so easy to use!