Better to lift second appliance inside cupboard, possibly (3,5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

GAMESTER (someone who plays games, especially a gambler = better = someone who bets), with the S (abbreviation for second) moved a couple of places towards the start (towards the top, in a down clue = lifted). Device for measuring gas usage, typically installed in a cupboard indoors or in a small cabinet on the outside of a building.