Graphometer
date: label: date made
content: ca 1870
name: label: owner
content: Mount St. Mary's College
label: maker
content: Secretan, Marc Francois
notes: label: Description
content: The semicircle of this graphometer is silvered, graduated to 30 minutes, numbered clockwise and counterclockwise, and read by verniers at either end of the alidade to single minutes. An inscription reads "Secretan à Paris." A label in the box reads: "Lerebours & Secretan, Secretan Successeur, Optician de S. M. l'Empereur, de l'Observatoire & de la Marine. Magasins: 13, Rue Du Pont-Neuf, Ateliers: 9, Rue Mechain, Faubg St. Jacques Paris." The address of the atelier suggests a date of around 1870.
label: Description
content: Marc François Secretan (1804–1867) went into partnership with N. M. P. Lerebours in Paris in 1844, and became the sole proprietor of the shop in 1855. The shop offered a wide range of scientific apparatus, showed its wares at several international exhibitions, and was still in business in 1930.
label: Description
content: Ref: Paolo Brenni, "Lerebours et Secretan," <i>Bulletin of the Scientific Instrument Society</i> 40 (March 1994): 3–6
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Surveying and Geodesy
label: See more items in
content: Measuring & Mapping
creditLine: label: Credit Line
content: Mount St. Mary's College
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.326108
label: catalog number
content: 326108
label: accession number
content: 257245
objectType: label: Object Name
content: graphometer
physicalDescription: label: Measurements
content: overall: 8 in; 20.32 cm
label: Measurements
content: needle: 1 1/2 in; 3.81 cm
label: Measurements
content: overall in case: 5 3/4 in x 9 1/4 in x 5 1/8 in; 14.605 cm x 23.495 cm x 13.0175 cm