Object Details
- G. Felsenthal & Sons, Inc.
- Description
- This device assists in calculations of changes in the range of a gun because of meteorological conditions, particularly wind speed and temperature. A rotating disc and pointer attached to the plastic base have the scales required to correct for wind speed. A scale toward the bottom of the base gives the temperature correction. Both of these corrections are in percentages of the range. Summing them gives the total meteorological correction as a percentage of the range. One then can use a range correction chart to find the actual range correction.
- A mark on the front of the instrument reads: Signal Corps U. S. Army (/) SOUND VELOCITY CORRECTOR PT-62/TSS-1 (/) Order No. 3531-CEGSA-45 G. FELSENTHAL & SONS - CHICAGO.
- The instrument was designed and made for the United States Army by G. Felsenthal & Sons of Chicago in 1945. It had Felsenthal designation FAS-2.
- For a related range correction chart, see 1977.1141.43.
- Reference:
- Accession file.
- Location
- Currently not on view
- Credit Line
- Gift of Ben Wharton Rau and Margery Felsenthal Rau
- 1945
- ID Number
- 1977.1141.42
- catalog number
- 336426
- accession number
- 1977.1141
- Object Name
- calculating disc & chart
- chart
- Physical Description
- plastic (overall material)
- Measurements
- overall: .1 cm x 26.5 cm x 20.2 cm; 1/32 in x 10 7/16 in x 7 15/16 in
- place made
- United States: Illinois, Chicago
- See more items in
- Medicine and Science: Mathematics
- Mathematical Charts and Tables
- Military
- Science & Mathematics
- National Museum of American History
- Subject
- Mathematics
- Record ID
- nmah_1213917
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746aa-93c3-704b-e053-15f76fa0b4fa
