I'm doing BT power supply swaps. They require all electrical connections to be torqued, marked, then checked and marked gain by the 2nd man. Their preferred bit of kit is a "Cooke set" from Insulated Tools Limited. 10-19mm sockets, adjustable. Pain in the arse to use. Does 4/5 - 25Nm. I find, strangely enough, that my wrist clicks at the appropriate tightness, negating the need for aforementioned tool.