* The Fruit Hardness Tester is a handheld compact penetrometer for fruit and some vegetable hardness testing. * By measuring force required to plunge into fruit pulp, inferring ripeness, FHT assists in determining the picking time or monitoring softening during storage. * FHT series is an indispensable tool for growers. * With Max. Hold, Unit Converse Functions. * Applies USB, RS-232, BT data output.(Optional).A Guide To Select The Model:The model of FHT Fruit Testers to chose from 3 models is used with specific size penetrometer tips for testing ripeness of specific fruit.FHT-05 (3.5mm): Small Fruits, Soft Fruits,FHT-15 (3.5mm): Smal l & Large Fruits, Firm Fruits, Hard FruitsFHT-1122 (7.9mm): Larger Fruits, Firm Fruits ,Hard Fruits(11.1mm) Apple, Firm FruitsSmall Fruits: e.g. Strawberry, Cherry, Grape , BerriesSoft Fruit s : e.g. Peach, Banana, Apricot, Plum, Melon, Citrus, PersimmonFirm Fruits: e.g. Pear, Nectarine, KiwiHard Fruits: e.g. AvocadoStandard Accessories: 1. Main Unit 2. 7.9mm Tip 3. 11.1mm Tip 4. Wrist Strap 5. Carrying Case 6. Operation ManualOptional Accessories(Not incluede in this link,if you need them please contact us): 1. USB, RS-232C data cable with software 2. BT data out put with software