Large sand timers with moulded end caps and thick surrounding walls. For easy identification each timer is colour coded. Perfect for use in games and timing experiments. Each colour represents a different timer.
Size 16cm x 7cm.
Large sand timers with moulded end caps and thick surrounding walls. For easy identification each timer is colour coded. Perfect for use in games and timing experiments. Each colour represents a different timer.
Size 16cm x 7cm.