Object Details
- Perrygraf Division, Nashua
- Description
- 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.
- 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.
- Location
- Currently not on view
- Credit Line
- Gift of Jack Warner
- 1975
- ID Number
- 1996.3078.01
- nonaccession number
- 1996.3078
- catalog number
- 1996.3078.01
- Object Name
- mathematical chart
- Physical Description
- paper (overall material)
- metal (overall material)
- Measurements
- overall: .3 cm x 28.5 cm x 18 cm; 1/8 in x 11 7/32 in x 7 3/32 in
- place made
- United States: California, Los Angeles
- See more items in
- Medicine and Science: Mathematics
- Mathematical Charts and Tables
- Science & Mathematics
- National Museum of American History
- Subject
- Mathematics
- Heating
- Record ID
- nmah_690747
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a5-27c1-704b-e053-15f76fa0b4fa
