EntityQ642905· pop 8· linked from 7 articleshelping handSign in to savealso known as a third hand, a type of jig used in soldering and craftworkConnectionsscale rulerEntityInternational Standard Book NumberEntitymachineEntityweighing scaleEntitymagnifying glassEntityrulerEntityhandicraftEntitycompassEntityergonomicsEntityprincipleEntitytheodoliteEntityspirit levelEntitysoldering or brazingEntityplumblineEntitycaliperEntitystop-motionEntitymicrometerEntitystencilEntityeaselEntitytape measureEntityCategoriesBrazing and solderingTools