Hi all, just to point out that I am a lay person as far as physics go, but thought that perhaps someone here can help me! While in St. Petersburg recently I went to a flea market and purchased the ship's compass from a Soviet Submarine. Not exactly sure from which sub or when it was built (the seller says an L-31 Barrakuda class nuclear sub from the 1960s, however the Barrakuda-class was built in the 1980s). The part number plaque on the compass itself says 1990 so it may have been a replacement part. Regardless, it's a neat piece for my coffee table. So... possibly a silly question, but is there any radiation risk at all from this piece, if it is indeed from a nuclear sub? I reckon that the Soviets had good safety controls in place (?), especially by the 1990s, and the bridge would have been far from the reactor anyways. To note that it went through a number of airport x-ray machines coming home, of course security always wanted to inspect it but that's about all (or do x-ray machines detect a different type of radiation altogether?) Should I be buying a geiger counter, or not worrying about it? Thanks in advance for your comments!