Our gas meter door was not secured on the last reading and when the recent winds got going, it was banging around constantly. Not good for the door and not good for peace. I managed to lock it with some long nosed pliers, but wondered why we didn't have a key. I asked at Focus, but they said it was a specialist key and not available to the general public. Doh! This device is brilliant. In one object I now have keys for the gas meter cupboard, the electricity meter cupboard and I can bleed my radiators. Thanks.