Large glass sand timers encased in hard plastic, able to withstand the knocks and bumps of the classroom.
Perfect for use in games, accurate event timing and experiments. Each timer has the time embossed on the top.
Sturdy good quality, good product.
My grandson is appreciative!
One was leaking when it arrived. But no problems with you sending us a new one which we are waiting for, Thank you
Great tool, thanks
Great resource- especially for computer time and bicycle sharing.
Good durable resource at reasonable price.