The sky’s the limit for two young Trowbridge inventors, as their GCSE electronics project prepares for professional testing.

Clarendon Academy students Luke Griggs and Ben Dyckes designed and built what is believed to be the world’s first fully digital indoor skydiving timer, and are now getting ready to test it in a 59ft vertical wind tunnel.

Sixteen-year-old Luke said: “When you’re flying around inside the tunnel you can’t always see the time on the wall, so you need something in your line of vision when you’re flying.

“Our device lets you know when it’s time to get out.”

The timer has already attracted support from the International Bodyflight Association, which promotes indoor skydiving, and if it is deemed safe enough it will be tested in a wind tunnel in Milton Keynes next month.

Luke said: “It took months of planning, and our teacher, Stewart Palmen, helped.”