One of the few things every man could use. An Interval Timer. You can use this to exactly count down any time period of 10 minutes or shorter up to the second precise with a ringing bell at the end! This Smiths Interval Timer was made in the 1950 in England and is all mechanical. Wind it up at the back, then push down the upper lever and set the time you want to count down. It starts running directly until the bell. It is a great size where the black square measuring 10 x 10 cm or 4 x 4 inches. It is produced in all steel, heavy duty style! No real signs of use, beautiful vintage piece.
Check out the vintage countdown video! Nice!