Slide Chart, Heat Gain Calculator
date: label: date made
content: 1975
name: label: maker
content: Perrygraf Division, Nashua
notes: label: Description
content: This orange and black paper device has a set of tables printed on both sides of a piece of cardboard that slides between two other pieces of cardboard that are riveted together. The whole thing fits in a cardboard envelope. The tables are used to calculate the total heat gain from light shining through windows and other glass in a building. The instrument was distributed by Libbey Owens Ford Company, a glass firm in Ohio.
label: Description
content: A mark on the envelope and the object reads: HEAT GAIN CALCULATOR; A paper sticker attached to the envelope reads: Display Copy Only (/) Please do not remove. A mark on the back of the instrument in the bottom right corner reads: ... 1975, PERRYGRAF Div., Nashua LA. CA 90064 Printed in U.S.A. A mark on the front left corner reads: LOF (/) GLASS (/) 811 MADISON AVENUE (/) TOLEDO, OHIO 43695. A mark on the front of the instrument reads: LIBBEY (/) OWENS (/) FORD (/) COMPANY.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Los Angeles
topic: label: Subject
content: Mathematics
label: Subject
content: Heating
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Mathematical Charts and Tables
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Jack Warner
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1996.3078.01
label: nonaccession number
content: 1996.3078
label: catalog number
content: 1996.3078.01
objectType: label: Object Name
content: mathematical chart
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: .3 cm x 28.5 cm x 18 cm; 1/8 in x 11 7/32 in x 7 3/32 in