Ross Precision Computer Instruction Manual
date: label: date made
content: 1919
name: label: maker
content: Computer Manufacturing Company
notes: label: Description
content: This deteriorating 16-page booklet was received with 1996.3077.01. It was copyrighted in 1919, but the address "340 Sansome St." is handwritten on page 3. Since the Computer Manufacturing Company of San Francisco did not move to this location until 1921, the instrument and manual were probably sent out in 1921 or later.
label: Description
content: The manual contains general instructions, instructions for using the dial alone, instructions for separately using the linear slide rule attached to the instrument, hints for speed and accuracy, fundamental examples, technical details for calculating with logarithms and exponents, and practical applications from payroll to cube roots. Stamped on pages 8–9 is the text: ANOTHER HINT FOR SPEED (/) In locating answer coil, when a (/) check is desired, set slide ROUGHLY. Pages 9–16 are accessed by folding out the pages from the binding.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, San Francisco
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Slide Rules
creditLine: label: Credit Line
content: Gift of B.K. Lunde, in memory of Roy Kegerreis
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1996.3077.02
label: nonaccession number
content: 1996.3077
label: catalog number
content: 1996.3077.02
objectType: label: Object Name
content: leaflet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: .2 cm x 12.5 cm x 20 cm; 3/32 in x 4 29/32 in x 7 7/8 in