Feature: 1. It is suitable for the fruit tree scientific research department, the fruits company, the fruit tree farm, unit and so on technical college agriculture colleges and universities. 2. Double pointer dial, the pointer will remain on the measured value for easy reading and recording during measurement. 3. The instrument is small in size, light in weight, intuitive in numerical display and easy to carry. It is suitable for fruit inspection in various fruit venues. 4. The test head of the fruit hardness tester can be disassembled, which is convenient to replace the worn‑out probe. 5. Specially-made measuring spring, newly assembled spring measuring device to ensure the accuracy of measurement. Specification: Item Type: Fruit Hardness Tester Material: Iron Color: As shown in the picture Application: Fruit hardness measurement Model: GY-1 Scale Indication: 2-15kg/cm² (x 10^5/Pa) Test Head Size: φ3.5mm / 0.14in Accuracy: ±0.1 Depth of Indenter: 10mm / 0.39in . Package List: 1 x Fruit Hardness Tester1 x Test Head1 x Instruction Manual1 x Storage Box Note: 1. Before measuring, loosen the firm knob, turn the dial to align the driving pointer (straight head) with the initial scale line, and then tighten the tightening knob. Check whether the indicating pointer is on the right side of the driving pointer. If it is found that it is not, turn the zero return knob to make the indicating pointer on the right side of the driving pointer.2. In order to achieve a more ideal accuracy, before the measurement, press the indenter by hand, and press the full scale force two to three times to lubricate it.3. When measuring the hardness, insert it evenly and slowly, do not rotate and press in, let alone impact measurement4. The indenter should be perpendicular to the surface of the fruit.5. The scale unit of the outer circle of ‑1 type fruit hardness tester is x 10^5/Pa, and the scale unit of the inner circle is kg/cm².6. Keep the instrument and the pressure head clean, and clean the juice after the measurement.7. The upper professional rack connector is for the professional inspection department to connect to the rack. When you need to connect, unscrew the knob and use the screw inside to screw on the screw hole on the rack.8. After using for more than one year, the back cover should be opened, and a small amount of watch oil should be injected into the spindle, gear, jewel eye, guide grooves, etc. to improve the accuracy of the instrument and prolong the service life.9. The force‑measuring spring has been calibrated at the factory, and the nut is not allowed to rotate without authorization. (Please do not disassemble it by yourself)