Electrical controls; Electrical controllers for controlling the speed of motors; Electrical controlling apparatus for motors; Power controllers (electric); Power controlling apparatus (electric); Speed controllers (electronic); Speed regulators (electrical); Electric control apparatus for motor land vehicles; Signalling apparatus and instruments; Apparatus for measuring; Detection apparatus, other than for medical use; Inspection apparatus (other than for medical or dental use); Apparatus and instruments for switching electricity; Apparatus and instruments for regulating electricity; Apparatus and instruments for controlling electricity; Apparatus for accumulating electricity; Electric monitoring apparatus; Scientific apparatus and instruments; Teaching apparatus; Teaching instruments; Testing apparatus for motor land vehicles; Electronic navigating apparatus; Electric navigation instruments