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