If i need 4oz marg do i do a straight conversion & use 4oz oil?? Other than checking prices online at places like mysupermarket, etc, does anyone have a method or online calculator for working out e.g They should weigh exactly 31.1 grams which is one troy ounce You can look up the official measurements online of whichever piece of silver you are buying There are other ways to test your silver there is the acid test but this only tests the surface it could be silver coated So there is an even better way to test silver.
A £1 coin is about 9 grams Eventually i found a 10 gram steel nut that also works fine It has been working perfectly now for about three months Switch stays down, and flips up when the water boils So no need to take anything apart Just a coin or a nut or something about 10 grams, and a bit of tape.