Fruitmeter (experimental)

Developed by the Ecophysiology group of DISTA-Unibo (now DISTAL), the sensor is made up of a self-made stainless steel frame, designed to be easily applied to fruits of different sizes.
The measurements taken during the fruit development phases showed a high sensitivity of the instrument, allowing to highlight the daily trends in the diametrical variations of the fruit and precisely monitoring the small variations in growth rates during the 24 hours.
Below is the link to the pdf of an article published in October 2007 on HortScience (a publication of the American Society for Horticultural Science), which concerns a prototype capable of measuring the diameter of the fruit:
“A Low-cost Device for Accurate and Continuous Measurements of Fruit Diameter” by Brunella Morandi, Luigi Manfrini, Marco Zibordi, Massimo Noferini, Giovanni Fiori and Luca Corelli Grappadelli