This is the Basic (Non-ATC) model.
We have finally found high quality analog refractometers that are affordable for every beekeeper. If you have begun selling or entering your honey in competition, a refractometer is a must. Make sure your honey is low moisture, so that you can feel confident about your honey! Includes refractometer, case, adjusting screwdriver, sample pipette, calibration fluid/stone and full instructions. No batteries needed!
Our analog refractometers have a resolution of .1% and a reading scale of 12-30%. Both the BLU-2ATC (Automatic Temperature Compensation) model and the Basic (Non-ATC) BLU-1B model are factory-calibrated for reading moisture at room temperature (68˚F/20˚C).
The ATC model will compensate for variations in ambient temperature. The basic model will need to be recalibrated to account for changes in area temperature before reading to maintain accuracy. Calibration is easy to do and takes just a couple minutes and this may not be an issue if you only use your unit seasonally.