Egg timer or kitchen timer - Metal - 1920-1930

a very special pre-war egg timer (that’s what’s on the dial)
But of course also usable as a regular kitchen timer or cooking timer (< 10 minutes)
A particularly eye-catching object in a modern kitchen!

It was designed specifically to bring the eggs to the desired level of doneness while cooking; it reads:
"Soft", "Medium" and "Hard"

Height 17.7 cm, width 11.5 cm
weight 0.38 kilogram
works well
in good condition, age is clearly visible