To generate a slashed zero on typewriters, typists would type a normal “O” or zero, backspace, and then hit the slash key to mark the zero.

How do you type a Ø?

ø = Hold down the Control and Shift keys and type a / (slash), release the keys, and type an o. Ø = Hold down the Control and Shift keys and type a / (slash), release the keys, hold down the Shift key and type an O.

How do you put a 0 with a line through it in Word?

Entering a “Slashed Zero” in Your Document Position the insertion point where you want the slashed zero to appear. Press Ctrl+F9. Word inserts field braces. Type “eq \o(0,/)”. (You should not include the quote marks.) Press Shift+F9. Word collapses your field and the slashed zero appears.