This is a handy set of 5 sand timers for teachers and therapists. They are made of a perspex inner with a plastic outer shell in case of mishaps. Thry are colour coded and have approximate times embossed on the lid of each.
And to make it easier, they are packed in a convenient storage case.
Size: 18cm high.
Timers included: 30 sec, 1 min, 3 min, 5 min and 10 min.