PEA-SELECTING MACHINE
DEGREE OF RIPENESS DETERMINED A machine called the “tenderometer,” built in New Zealand during the war for the vegetable dehydration plant at Pukekohe, was the arbiter as to whether any given consignment of green peas should be quick-frozen or canned. The machine was used to assess, the degree of ripeness of peas and to decide whether or not they were ready for harvesting. Two sets of curved blades were made to swing through a layer of peas, and mesh. The resistance encountered was measured and recorded by the machine. As peas ripen they become harder, so that a greater force is required to move through them. A careful check showed that the machine could be relied on to give consistent resuts and to distinguish with certainty between various grades of peas.
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https://paperspast.natlib.govt.nz/newspapers/BPB19470804.2.24
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Bay of Plenty Beacon, Volume 11, Issue 62, 4 August 1947, Page 5
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133PEA-SELECTING MACHINE Bay of Plenty Beacon, Volume 11, Issue 62, 4 August 1947, Page 5
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