You are bidding to buy an HF  Frequency Crystal Calibrator No 10 ZA32171 as used with the WW2 WS62 Transceiver. 

It takes its power from  the transceiver three pin connector on the front panel . 

Please note I do nor have a  cable  for it.

Good condition with its original operation instructions . Been sitting for years so needs cleaned

UK postage will be £6.50

Also if  you have no EBAY history please contact me before bidding