cathetometer rule
Date1880
Inventory Number1998-1-0362
ClassificationCathetometer
Subject
Maker
S.I.P Geneve
1862-1973
User
Chemistry Laboratory, Harvard College
founded 1850
Cultural Region
Place of Origin
Place of Use
Dimensionsrule: 1 × 105.2 × 2.5 cm (3/8 × 41 7/16 × 1 in.)
case: 4.8 × 108 × 9 cm (1 7/8 × 42 1/2 × 3 9/16 in.)
case: 4.8 × 108 × 9 cm (1 7/8 × 42 1/2 × 3 9/16 in.)
Material
Accessorieswooden box with hinged lid and metal clasps, for storage
DescriptionBadly corroded metal rule printed with a single scale (in centimeters, with values ranging from 0 to 103). The scale is printed along the length of the rule, near its center, where a darkened strip is marked for tenths of centimeters. On both sides of the scale are rectangular channels.
The rule is stored in a wooden box with brass hinges and two metal clasps. A Chemical Laboratory of Harvard College label is affixed to the lid.
The rule is stored in a wooden box with brass hinges and two metal clasps. A Chemical Laboratory of Harvard College label is affixed to the lid.
Signedface of bar, bottom left: S.I.P. GENEVE
Inscribedon back of bar, over orange paint near left end: E4604
box lid, on label: CHEMICAL LABORATORY / OF HARVARD COLLEGE;
box lid, right center: E4604
FunctionFor measuring vertical distances in cases where the scale cannot be placed very close to the object in question, for example in determining the level of liquid in a capillary tube. The bar would be fixed vertically in a stand, and a telescope and vernier scale attached to it.
Keuffel & Esser Company
Date: circa 1920
Accessories: brown wooden case with keyhole and two metal clasps; instruction booklet (with instrument)
Object number: 5267
B. H. Colby
Date: circa 1900
Accessories: hinged wooden case with metal clasp for storage, with paper instruction for use affixed to inside of lid.
Object number: 1989-1-0014
Hemmi
Date: circa 1951
Accessories: Black leatherette case, for storage.
Object number: 2003-1-0226
Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
Date: 1880-1890
Accessories: Check see also records: box of weights and other parts (#1998-1-0248c); extra mount for finderscope (#1998-1-0248b).
Object number: 1998-1-0248a
Ledder & Probst
Date: circa 1915
Object number: 1997-1-1633
William R. Osgood
Date: 1900-1940
Accessories: Brown leather case with flap closure, for storage
Object number: 1997-1-1926
GUCO
Date: 20th-mid 20th Century
Object number: 2003-1-0253