pk_test_51NPihrD2Glr2YKtWirjF3a8nYpJhqiIc5FtfkHOkQbmuHzR4mas8psFK1RiUyuDaY4S1pw5zUVQAayfCmU8wdN4o00kus9h4rd
A variety of Aneroid and W/B set knobs. Aneroid ones we would solder on with tension, Mercury Wheel barometers are held on with a small brass nut supplied and a tiny leather or paper washer you have to make. Measurements are max O/d and diameter of spigot and length of spigot.