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Milk flow indicator: close-up
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Sub-ClassIndex card
Date of originalNo dateDescriptionA close-up of an early type of 'sight-glass' milk flow indicator, in-situ, illustrating the sight glass, tubing and teat cups.
The indicator had a dual purpose: firstly to provide a means for visual inspection of the state of the milk being taken, and secondly, as an indicator of the end of milking.
These early models relied on the milker keeping the indicator in view, but as technology progressed, enhancements such as the Ruakura developed 'photo-transistor circuit' (1972) which detected the level of milk-air flow negated the need for constant viewing.
The heyday of milking research at Ruakura (from the late 1940's onwards) saw the development of the 'Ruakura milk flow indicator', followed by the 'Ruakura milking machine' (1954).Size of original12.6 x 20 cmCreatorUnknownColourB&WLanguageN/A
Date of originalNo dateDescriptionA close-up of an early type of 'sight-glass' milk flow indicator, in-situ, illustrating the sight glass, tubing and teat cups.The indicator had a dual purpose: firstly to provide a means for visual inspection of the state of the milk being taken, and secondly, as an indicator of the end of milking.
These early models relied on the milker keeping the indicator in view, but as technology progressed, enhancements such as the Ruakura developed 'photo-transistor circuit' (1972) which detected the level of milk-air flow negated the need for constant viewing.
The heyday of milking research at Ruakura (from the late 1940's onwards) saw the development of the 'Ruakura milk flow indicator', followed by the 'Ruakura milking machine' (1954).
Size of original12.6 x 20 cmCreatorUnknownColourB&WLanguageN/ADepicts or relates to
KeywordCowsDairiesMachineryMilkMilkingRuakuraSubject - GeographicRuakuraNode lookupMilk flow indicator: framed with index card (PDF)Milk flow indicator: framed with index card (TIFF)Knowledge node lookupRuakura Campus
DairiesMachineryMilkMilkingRuakuraSubject - GeographicRuakuraNode lookupMilk flow indicator: framed with index card (PDF)Milk flow indicator: framed with index card (TIFF)Knowledge node lookupRuakura CampusAdministration
FormatTIFFDate of digital2nd March 2016Technical descriptionEquipment: Lanovia C550
Software used: Adobe
Program name: FFEI Fsys file-format library
Dimensions: H 5000 x W 3158 pixels
Horizontal resolution: 500 dpi
Vertical resolution: 500 dpi
Bit depth: 24
Uncompressed
Resolution unit: 2
Colour representation: Uncalibrated
Photometric interpretation: RGB
EXIF version: 0221Location of hard copyRUA-AnnexOriginal file namein-7-0003ab
Date of digital2nd March 2016Technical descriptionEquipment: Lanovia C550Software used: Adobe
Program name: FFEI Fsys file-format library
Dimensions: H 5000 x W 3158 pixels
Horizontal resolution: 500 dpi
Vertical resolution: 500 dpi
Bit depth: 24
Uncompressed
Resolution unit: 2
Colour representation: Uncalibrated
Photometric interpretation: RGB
EXIF version: 0221
Location of hard copyRUA-AnnexOriginal file namein-7-0003abClick on the image to add
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Unknown, Milk flow indicator: close-up. AgResearch, accessed 17/04/2026, https://agresearch.recollect.co.nz/nodes/view/283