About Items:

1 (one) new Russian Geiger-Muller G-M Counter Tube SI 21BG (СИ 21БГ)

or 1 (one) SI 25G (СИ 25Г),

or 1 (one) SI 39G (СИ 39Г).

 Condition: These Tubes was made by military plant in former USSR.  It is new tubes directly from the same wholesale factory box. Surplus of military equipment, only great condition. New, old stock. Best quality!

 About SI 21BG (СИ 21БГ):

 Russian made glass Geiger Mueller tube is designed to detect beta and gamma rays.

 Working range of Dose POWER       50 R/h;

 Working Voltage                               350 - 450 V;

 Maximum registering range             1000 Roentgen/hour;

 Length                                               70 mm;    

 Diameter                                           17 mm.

 About SI 25G (СИ 25Г):

 Russian made glass Geiger Mueller tube is designed to detect beta and gamma rays.

 Working range of Dose POWER       200 R/h;

 Working Current                               max 0,03 mA;

 Plateau Length/Inclination                0,25 %/ V;

 Working Voltage                               382 - 398 V;

 Maximum registering range             1000 Roentgen/hour;

 Length                                               60 mm;

 Diameter                                           10 mm;

 Weight                                               15 gr.

 About SI 39G (СИ 39Г):

 Russian made glass Geiger Mueller tube is designed to detect beta and gamma rays.

 Working Voltage                                360 - 440 V;

 Plateau Length/Inclination                 0,2 %/V;

 Diameter                                            10 mm;

 Length                                                90 mm.

 Payment Options: Pay directly on eBay via PayPal.

Before placing your order, please send us an e-mail of the Geiger Mueller tubes you would like to buy.

 Shipping Options: I send worldwide. Postal period 7-20 business days. We pack the items in a very safe way for transportation and ship them usually in three working days after payment. Delivery by registered postal packet. After shipping i will write you the number of your parcel.

 Warning: To provide free delivery of the lamp will send them without big factory packaging.

 Insurance Options: Worldwide insurance already included in P&P. 30 Days - Money Back. Western Bid Inc (USA) gives the service.

 Additional Information & Questions: I apply maximum efforts to work better and better. It is very important for me to get your feedback to know, whether you are really satisfied completely! Please contact me if  any questions. Please use links "Ask seller a question".

 Guarantees and a Policy of return: We guarantee you complete satisfaction with all our products. If you receive an item you ordered is received damaged or defective, we will send replacement item. We only accept returns if the items in original package you have received are not what was described in the auction, damaged or defective. If exchange is not possible money refund will be issued. All returns must be sent to Bulgaria. Item for returning must have the original tags and packing, otherwise it won't be accepted.

Thanks And Good luck!