efractometer for Aquarium, Saltwater Testing, Dual Scale Salinity Tester 0-100

✅Auto Temperature Compensation (ATC), increase accuracy& eliminates concerns on temperature
✅Easy to calibrate and use
✅Cushioned with soft & comfortable non-slip rubberized grip, insulate test solution from body heat
✅Adjustable focus and clearly defined scale, with large easy-to-read measurements