temperature converter
Datecirca 1830
Inventory NumberDW0228
ClassificationCalculating Device
Subject
Maker
French
Cultural Region
Dimensions16.1 × 3.8 × 1 cm (6 5/16 × 1 1/2 × 3/8 in.)
Material
DescriptionPaddle-shaped piece of wood with brass plates on sides and body near base of handle. A second, rectangular piece of wood is screwed on top of the first in such a way that a gap remains between the two. In this gap is a thin metal rod with a pointed end, which moves to the left when a pin on the right side of the paddle is depressed.
The face of the top wood piece is printed with a diagonal scale with values ranging from -10 to 35, graduated into sevenths. The back of the bottom wood piece is printed with a second diagonal scale, with values ranging from 6 to 26, graduated into fifteenths. A scale with values descending from 9 to 1 is printed near the top, rounded edge of the face of the bottom wood piece.
The instrument is missing the index that slides up and down the diagonal scale, operating the pin-lever to move the needle over the top scale.
The face of the top wood piece is printed with a diagonal scale with values ranging from -10 to 35, graduated into sevenths. The back of the bottom wood piece is printed with a second diagonal scale, with values ranging from 6 to 26, graduated into fifteenths. A scale with values descending from 9 to 1 is printed near the top, rounded edge of the face of the bottom wood piece.
The instrument is missing the index that slides up and down the diagonal scale, operating the pin-lever to move the needle over the top scale.
Signedbelow pointer scale: 2/5 DEM/M PAR HAUTEUR
FunctionFor use in converting among different units of temperature.
ProvenanceDavid Wheatland acquired from Sydney Strange, New York, January 20, 1967.
Gerber Scientific Inc.
Date: circa 1950
Accessories: instruction booklet (with instrument); light brown leatherette case with brown velvet lining; six sheets of graph paper
Object number: 2003-1-0234
Keuffel & Esser Company
Date: copyright 1947
Accessories: brown leather case, with metal-reinforced belt clip
Object number: 1997-1-0971
Pickett & Eckel, Inc.
Date: copyright 1959
Accessories: brown leather case with hard plastic lining and flap closure; small plastic bag; Twin Pack box; 3 instruction manuals (in file); belt loop (1991-4-0004b); pocket slide rule (1991-4-0004c); cardboard box
Object number: 1991-4-0004a
Hemmi
Date: 1971
Accessories: brown leather case with glap closure; brown leather loop for attachment to belt
Object number: 1989-1-0009
Keuffel & Esser Company
Date: ca. 1915-1923
Accessories: Brown leather case with flap closure, for storage
Object number: 1997-1-2006
Pickett & Eckel, Inc.
Date: circa 1951
Accessories: brown leather case with table of equivalents
Object number: 2004-1-0341
Keuffel & Esser Company
Date: circa 1935
Accessories: card describing use; brown leather case with metal-reinforced flap closure, for storage
Object number: 1997-1-2005
Keuffel & Esser Company
Date: copyright 1961
Accessories: brown leather case with metal-reinforced flap closure
Object number: 2003-1-0191
Keuffel & Esser Company
Date: copyright 1961
Accessories: Brown leather case with metal-reinforced flap closure, for storage.
Object number: 1995-1-0024
Keuffel & Esser Company
Date: 1908-1921
Accessories: sliding brown leather case
Object number: 1997-1-0979