Tester, egg
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1995.0038.001
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- OBJECT TYPE
- FRESHNESS/MECHANICAL
- DATE
- 1922
- ARTIFACT NUMBER
- 1995.0038.001
- MANUFACTURER
- National Research Council Canada
- MODEL
- Unknown
- LOCATION
- Ottawa, Ontario, Canada
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- STAINLESS STEEL MICROMETER/ NON-FERROUS METAL LEGS
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- N/A
- Width
- 19.0 cm
- Height
- 12.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Agriculture
- Category
- Poultry equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- NRC
- Country
- Canada
- State/Province
- Ontario
- City
- Ottawa
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- Unknown
- Canada
-
Made & used at the Food Research Section, Applied Biology of the National Research Council of Canada (NRC). Possible connections to D.A. Fletcher, identified as a research specialist with the Poultry Division of the Department of Agriculture in Ottawa. Fletcher developed the Fletcher colour scale with NRC paint specialists according to Earle Snyder, "Eggs: The Production, Identification and Retention of Quality in Eggs." Ottawa: Department of Agriculture, 1961, 33. - Function
-
A device used to measure the freshness of an egg by measuring the height of the yolk of a broken egg; the greater the yolk height, the fresher the egg. - Technical
-
An example of a simple egg freshness tester using mechanical principles. The device measured the Haugh Unit score. See Snyder, "Eggs: The Production, Identification and Retention of Quality in Eggs." Ottawa: Department of Agriculture, 1961, 33-39 for images and discussion. This unit appears to be the stand and may be missing the micrometer, which actually measured the height of the yolk. See figure 25B, page 38, in previously noted publication. - Area Notes
-
Unknown
Details
- Markings
- INCISED LETTERING ON SHAFT READS 'THE LUFKIN RULE CO./ SAGINAW, MICH./ MADE IN U.S.A./ PAT. AUG. 1. 1922/ NO. 031/ INCISED SCALE & MARKINGS ON MICROMETER FOR 0 TO 20
- Missing
- APPEARS COMPLETE
- Finish
- PLATED & BRUSHED METAL/ INCISED CROSS-HATCHED MICROMETER ADJUSTMENT KNOB
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
National Research Council Canada, Tester, egg, after 1922, Artifact no. 1995.0038, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1995.0038.001/
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