This kind of refractometer has an out-standing calibration screw. That brings convenience to the calibration work. No screw-driver needed when the calibration work is required. And the Square prism house can make the refractoemter stand stably. We name it as N-style

New-style Honey refractometer

This model is specially developed for the measuring of the water concentration in honey. 

RHFN-30ATC is an upgraded version of RHF-30ATC with an additional features of BUILT-IN CALIBRATION KNOB, has much LIGHTER WEIGHT, and LONGER

Guarantee: 24months

Specifications:

• Measuring Range: 10%-30%water
• Resolution Factor: 0.1%water 
• Focus is adjustable and can be controlled manually
• Comes with a non-roll stand
• With much lighter weight and longer
• Equipped with dual-scale measurement which provides direct reading
• High quality and accurate testing results are guaranteed
• Approved by strict quality and safety standards
• Durable, Heavy-duty and lightweight with its aluminum construction
• Made with the highest and finest quality of aluminum & rubber
• Cushioned with soft & comfortable non-slip rubber

Packing List:

• 1 x Refractometer
• 1 x Pipette
• 1 x Screw Driver
• 1 x Cleaning Cloth
• 1 x English Instruction Manual

Noted：pls use Bromonaphthalene calibration turn the calibration screw with the screw driver until the reading is 19.1