This is for a single unit. This one has the external power supply (120V with DC Adapter) AND run on 12V batteries. They are highly functional as indicated below.
DX-1 New and Improved Model! 5 YR WARRANTY! Made in USA ***PLEASE READ ENTIRE AUCTION*** Upgrades for the New DX-1 Model include a new latching button and LED lit display!
FULL VIEW OF LUDLUM MODEL 2221 Scaler/Ratemeter SCA LUDLUM MODEL 2221 SCALER/RATEMETER SCA REFURBISHED AND WARRANTIED UNITS FOR SALE CURRENT FULL-RANGE CALIBRATION AVAILABLE FOR NOMINAL PRICE TO BE QUOTED
Geiger Counter Test Source - 1 Radium Watch Hand - 800 CPM / 4.0uSv You get 1 Radium watch hand in a Glass Vial Safe to handle Glows Intensely green under a blacklight A Nice item for your collection, or as a way to test your Geiger counter Fast Free Shipping from USA, Will Ship within 1 Day Geiger Counter Not Included.
Geiger Counter Test Source - 2 Radium Watch Hands - 1150 CPM / 5.9uSv You get 2 Radium watch hands in a Glass Vial Safe to handle Glows Intensely green under a blacklight A Nice item for your collection, or as a way to test your Geiger counter Fast Free Shipping from USA, Will Ship within 1 Day Geiger Counter Not Included.
Geiger Counter Test Source - 1 Radium Watch Hand In Glass Vial - 500 CPM / 2.6uSv You get 1 Radium watch hand in a glass vial Safe to handle Glows Intensely green under a blacklight A Nice item for your collection, or as a way to test your Geiger counter Fast Free Shipping from USA, Will Ship within 1 Day Geiger Counter Not Included.
You can see the probe is operational while connected to a Ludlum 2221 scaler which is also up for sale in a different auction. Specifications INDICATED USE: low-le
Additional features include backlight display, internal memory, built-in efficiencies for common isotopes, and free Observer USB Software. Detector Internal Halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.77 in.).
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