Beakey may have nailed it, my pal (mechanic) has a Snap- On tool? which is a fork at one end and a ring spanner at other.
But if you reach up to tighten your starter terminal with your right hand you then punch yourself in the face with a spanner in your left hand. Ask me how i know.
Magnetic dish Mirror on a stick Magnet on a stick Grabby claw, Can't live without them With my grabby claw I managed to get the fuel sender seal out of the tank