Electrotechnical products

This auction is for a Ludlum Model 12-4, serial number 141290 radiation survey meter. I have done limited testing on this Federal government surplus item - as you can see in one of the photos, it responds to my Cs137 source (source, batteries, cable, and detector are not included in sale). Case has...

This sale is for an A.I.R. Inc. Intellisonde IS-5A series Digital Radiosonde. Frequency is 1680 MHz. Measures temp, humidity,pressure and battery digitally. These gov surplus items are new, unused in sealed bag. I have removed one from its container for the photo. The unit is shipped with 9 volt...