Exactus Mini-Add
date: label: date made
content: ca 1950
name: label: maker
content: Exactus
notes: label: Description
content: This black and silver-colored metal instrument is a notched band adder with nine bands, eight columns, and a nine-digit display. Its bracket-shaped columns are color-coded for dollars and cents. A plate attached to the top which covers the lower part, for use in addition, or pivots and covers the upper part, for use in subtraction. Across the top is a zeroing bar. The device includes a metal stylus and fits in a black plastic case which also holds several yellowing sheets of paper. Instructions are stored with the object.
label: Description
content: This British adder was received at the Smithsonian in about 1970. It seems likely that it was made in the mid-20th century.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: Grand Bretagne
label: place made
content: United Kingdom
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Adder
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Howard Chapelle
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1987.0788.04
label: accession number
content: 1987.0788
label: catalog number
content: 1987.0788.04
objectType: label: Object Name
content: adder
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 1 cm x 7.9 cm x 11.5 cm; 13/32 in x 3 1/8 in x 4 17/32 in