Item Description: Atago HHR-2N Portable Refractometer One BRAND NEW Atago HHR-2N (12.0% to 30% Water Scale) Hand held Refractometer in a blue, foam-lined vinyl case. This unit is especially necessary when testing high sugar items like honey. The HHR-2N uses ambient light and doesn't need a battery or power source. Included are: a mini screwdriver for scale calibration, a 10 Gram Vial of Calibration Fluid and a Users Guide. This unit also features a "sunken" Calibration Screw and heavy-duty Aluminum construction. The HHR-2N is equipped with “Automatic Temperature Compensation” for accurate measurements without recalibration after shifts in ambient working temperature (field use). The "ATC" range is 10'C-30'C (50'F-86'F). HHR-2N Specs: Water Scale: * Scale Range: 12%-30% Water * Divisions: 0.10% Water * Accuracy: +/- 0.20% National Industrial Supply 30777 Rancho California #891420 Temecula, CA 92589, USA Sales: 951.308.9269 Fax: 310.833.7306 We prefer Paypal!