![Eddingtons Stainless Steel Egg Timer](http://www.stockdesignonline.com/cdn/shop/products/dc96587e83ec7bf00bbdc85e7982a5c5_{width}x.jpg?v=1703432026)
Simply twist the timer all the way round to 60 minutes and then back to the desired time setting (this action winds the timer in a clockwork fashion to give a longer ring), when your time is up the timer will ring to notify you.
Times up to 60 mins.