CD V-740 Pocket Dosimeter (ca. 1956)

The CD V-740 was a direct-reading (self-reading) pocket dosimeter that measured exposures from 0 100 roentgen (R). The 1959 revision of Technical Bulletin TB-11-20 Radiological Instruments for Civil Defense stated that the CD V-740 had been superceded by the CD V-742.  

Manufacturers: Landsverk, Bendix

Number manufactured: approximately 160,000

An early production run example of the CD V-740 manufactured by the Landsverk Electrometer Company and donated to the ORAU collection by the Federal Emergency Management Agency.     Size:    4.5" long, 0.5" diameter.
Approximate Cumulative Procurement, Inventory and Distribution of CD V-740s*

Fiscal Year

Procured

Inventoried

Distributed

Through FY 1956

 

 

3,857

Through FY 1957

35,334

 

7,021

FY 1958

129,280

 

42,007

FY 1959

148,796

92,489

56,307

FY 1960

149,150

84,987

64,163

FY 1961

162,950

94,681

68,269

FY 1962

162,950

77,502

84,358

FY 1963

162,950

 

 

FY 1964

162,950

 

 

FY 1965

162,950

7,592

149,130

FY 1966

162,950

7,594

155,256

FY 1967

162,950

6,759

156,091

FY 1968

162,950

7,436

155,414

FY 1969

162,950

5,964

156,886

FY 1970

162,950

5,907

156,943

FY 1971

162,950

5,700

157,149

FY 1972

162,950

5,569

157,280

FY 1973

162,950

 

 

FY 1974

162,950

5,142

157,707

 

*  The numbers in the above table should be considered approximate. I compiled them from data in the Annual Statistical Reports of the OCDM, OCD and DCPA. By "procured," I mean delivered by the manufacturer to the OCDM, OCD or DCPA. "Inventoried" means stored in a Federal (rather than state) warehouse ready for distribution. "Distributed" means sent to the end user. The latter primarily means the states, but also various federal agencies and even foreign governments. The number of procured instruments may be greater than the combined number of inventoried and distributed instruments for a variety of reasons: some may have been sent back to the manufacturer, some may have been disposed of, the numbers might be incorrect, etc.

All of the above were donated by the Federal Emergency Management Agency courtesy of Carl Siebentritt

References

Office of Civil and Defense Mobilization, Radiological Instruments for Civil Defense Technical Bulletin TB-11-20,  Revised June 1959.  

Department of Defense, Office of Civil Defense, Handbook for Radiological Monitors FG-E-5.9, April 1963.

Museum Directory        Civil Defense

Last updated: 05/24/11
Copyright 1999, Oak Ridge Associated Universities