Item Type: Fruit Hardness Tester Material: Iron Model: GY-3 Purpose: Fruit Hardness Measurement Model-3 Scale Indication0.5-12kg/cm21-24kg/cm2 Probe SizeDiameter 11mm / 0.43inDiameter 8mm / 0.31in Accuracy¡À0.1 Depth of Indenter10mm / 0.39in 1¡¢With a dual?pointer dial, the pointer will remain on the measured value during measurement to facilitate reading and recording. 2¡¢GY?3 fruit hardness tester has an intuitive and clear numerical display, which is suitable for fruit inspections in various fruit establishments. 3¡¢Portable fruit sclerometer, uses a special measuring spring device to ensure the accuracy and stability of the measurement. 4¡¢Mainly used for fruit hardness measurement, easy to measure, judging the ripeness of the fruit according to the hardness. 5¡¢Small in size, light in weight, easy to carry around, with detachable probe, easy to replace worn out probe, improve accuracy.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 or three times to lubricate it. 3. When measuring the hardness, insert it evenly and slowly, do not rotate or press in, let alone impact measurement. 4. The indenter should be perpendicular to the surface of the fruit. 5. The scale unit of the outer circle of the ?1 and ?2 fruit hardness testers is x 10^5/Pa, and the scale unit of the inner circle is kg/cm2. For the ?3 type, when a small indenter is connected, use the inner circle scale to read. When connecting a large indenter, use the outer scale to read. 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 groove, 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. (It is marked on the table, please do not disassemble by yourself) 1 x Fruit Hardness Tester 2 x Probe 1 x Manual 1 x Storage Box