This will let you make secret number codes later. Put the small circle with the letters on it on top of the larger one, lining up the letters. Put the split pin through the centre to secure it.

Shoppers have been confused by a series of secret letters and numbers ... in food manufacturing this is a date code so the letter is the month and the number is the day.” Another comment read ...

(What the secret codes on your battery's label won't tell ... Group size is a code on the label that includes numbers, or numbers and letters, representing measurement of the battery's physical ...