Radiac Set
IM-85A/PDR-27F
IM-85A/PDR-27F
Measures 0 - 500 milliroentgens Per Hour / 4 Range Scales
Measures Gamma, Detects Beta. / Uses 2 Geiger Mueller Tubes
Manufactured By: Admiral Corporation
Uses the following batteries:
(4) RG-4B Mercury Cells / (2) 67½ volt type "B" batteries / (1) BA 261/U 22½ volt battery
Dimensions: 10" x 5¾" x 7½"
Serial Number : 154
Government cost in 1969: $147.75
AN/PDR-27H Radiac Set
Includes: CY-1296/PDR-27F Case S/N: 6788
Technical Manual & Updates / Headphones / Shoulder Strap / Probe Wrench / Allen Wrench
Field Change 1 : Increases the time constant of the indicating circuit.
Inside View
No tubes have been removed, but working condition is unknown.
Note: The AN/PDR-27 series has been replaced by the AN/VDR-2.