Measuring Tape
notes: label: Description
content: Charles Edouard Guillaume was a Swiss metallurgist working at the International Bureau of Weights and Measures in Paris who, in 1896, found that a nickel-steel alloy (with about 35 per cent nickel) has a very small coefficient of expansion. Guillaume named the new material Invar and won a Nobel Prize for the discovery in 1920. The “J. H. AGAR BAUGH, LONDON No. 1810” inscription on this measuring tape refers to James Harold Agar Baugh (1872-1935), a Welsh metallurgist who settled in London, and produced invar tapes and pendulums.
label: Description
content: Ref: Owen B. French, "INVAR (NICKEL-STEEL) TAPES ON THE MEASUREMENT OF SIX PRIMARY BASE LINES," Transactions of the American Society of Civil Engineers 60 (1908): 219-247.
label: Description
content: J. H. Agar Baugh, “Invar Tapes,” <i>The Geographical Journal</i> 39 (1912): 47-51.
label: Description
content: Alfred Thomas, “James Harold Agar Baugh: Pendulum Maker,” <i>Antiquarian Horology</i> 26 (2001): 257-262.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London, City of London
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.333662
label: catalog number
content: 333662
label: accession number
content: 300659
objectType: label: Object Name
content: measuring tape
physicalDescription: label: Measurements
content: overall: container: 2 7/8 in x 23 1/2 in x 23 1/2 in; 7.3025 cm x 59.69 cm x 59.69 cm
label: Measurements
content: overall: measure: 3/8 in x 17 5/8 in; .9525 cm x 44.7675 cm