https://www.lanequalitys.com/products/gy-4-fruit-hardness-tester.html
The GY-4 digital Fruit Hardness Tester is an essential tool designed specifically for measuring the hardness of various fruits such as apples, pears, strawberries, and grapes. This fruit durometer finds widespread application across several sectors, including scientific research departments, fruit companies, farms, and agricultural departments. Its primary function is to accurately assess the maturity level of fruits, thereby ensuring that consumers enjoy the best possible taste and nutritional benefits.