General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

GLASS, MERCURY & PAPER LACTOMETER. CASE MADE OF COATED PAPER.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

34.0 cm

Width

4.0 cm

Height

4.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Hydrostatics & fluid mechanics

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

North America

State/Province

Unknown

Period

THIS TYPE OF LACTOMETER PROBABLY USED C. 1900- 1930.

Canada

EXAMPLE OF EARLY 20TH CENTURY MILK TESTING DEVICE, IMPORTANT AS PART OF THE EFFORT TO REGULATE QUALITY OF MILK, AND IMPROVE PUBLIC HEALTH.

Function

TO MEASURE THE SPECIFIC GRAVITY OF LIQUIDS, IN THIS CASE MILK.

Technical

ADAPTATION OF HYDROMETER TO MEASURE SPECIFIC GRAVITY OF MILK. QUEVENNE LACTOMETER FEATURES SCALE DIVIDED INTO 25 EQUAL PARTS, FROM 15 TO 40. IT IS GRADUATED TO GIVE CORRECT RESULTS AT 60-DEGREES F.: FOR THIS REASON A THERMOMETER SCALE APPEARS ABOVE THE LACTOMETER SCALE ON THIS INSTRUMENT. (REF. 2, PP. 213-14)

Area Notes

Unknown

Details

Markings

Thermometer scale at top divided 0- 130 in increments of 2, and labelled at intervals of 10 degrees; scale labelled "Fahrenheit." Scale for specific gravity of milk labelled "Lactometer [illegible] Quevenne.". Blue band marked "Skim Milk" and divided from 1/10 to 5/10: these divisions recorded to left of, and with reference to, quevenne scale divided (from bottom) 40 to 15 in single increments, and labelled at intervals of 5. To right is scale labelled "Pure Milk" divided from 1/10 to 5/10: this with reference to range 15- 29 of quevenne scale. / "LACTOMETER" handwritten on PT case.

Missing

NONE.

Finish

CLEAR GLASS TUBE CONTAINS MILK SCALE ON YELLOW, WHITE & BLUE PAPER; THERMOMETER SCALE PRINTED ON WHITE PAPER. TUBE STYLE CASE OF WRINKLE-TEXTURED BLUE-GREEN CAOTED PAPER.

Decoration

N/A