All-Purpose Fruit Firmness Tester – FP003. Helps to test the firmness and freshness of softer fruits and vegetables. Two different diameter tips for dual testing range. Padded stainless steel carrying case included. Mountable on a test stand for lab testing. Analog, no batteries required. Tip diameter: 3.5mm and 11mm. Dual range 0.5-12kg/cm2 for general purpose and 1-24kg/cm. Trailing pointer indicates the highest resistance point when testing. This stainless steel fruit firmness tester has a dual range that allows you to measures general fruit firmness with a range of 0.5-12kg/cm2. The thinner 8mm tip is ideal for Apples, Peaches, Pears, Avocado, Kiwis and Tomatoes. You can also change the measurement range by swapping tips to the thicker 11mm diameter tip and using the penetrometers dual display to a measurement range of to 1-24kg/cm2 for tougher fruits. This this unique dual dial display it is easy to measure the firmness of nearly all fruits. Fruit firmness is considered one of the most accurate ways to test for a fruit maturity and quality. Fruit Penetrometers are widely used by universities for fruit research and by fruit companies to make important business decisions. Details: This product measures in kg/cm2. To convert to PSI you multiply by 14.223. Package Includes: Meter, 3.5mm tip, padded stainless steel case, manual. We will respond to you within 24 hours and do our best to help you out! Thank you for your interest in our product.