Instrument of torture little Tom’s gang used (10)
I believe the answer is:
thumbscrew
'instrument of torture' is the definition.
(thumbscrew is a kind of instrument of torture)
'little tom's gang used' is the wordplay.
I cannot really see how this works, but
'tom's' could be 'thumbs' (folklore character Tom Thumb) and 'thumbs' is present in the answer.
'gang' could be 'crew' ('crew' can be a synonym of 'gang') and 'crew' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
(Other definitions for thumbscrew that I've seen before include "Instrument of torture (crushing the pollex)" , "It puts the squeeze on" , "That could be unpleasant!" , "excruciating instrument" , "agonised by it?" .)