Abstract: A sampling probe for sampling the exhaust gases of internal combustion engines, particularly commercial vehicles. The probe includes a sampling tube having an inlet at one end for receiving the gaseous products. The tube is pivoted to an arm at an outer end of the arm so that the sampling tube can move relative to the arm and manipulate the position of the inlet and insert the inlet into a gas outlet tube. The arm may be clamped to the gas outlet tube by a clamping arrangement operated from the end of the arm.

Abstract: A hand-held diesel engine tester, includes a hand operable pump, a reservoir for liquid to be pumped, connection elements for said injector and a liquid pressure indicator or a connection for a liquid pressure indicator.

Abstract: A wheel alignment gauge comprising a pair of beams, each adapted to be mounted on or located against a different one of a pair of vehicle wheels or axles for such wheels, each of the beams is provided with a pivoted arm at an end of the beam which projects beyond the outer circumference of the wheel and the arms are interconnected by an elastic link, each of said arms is provided with read-out means to give an indication of the angular position of the arm relative to the beams, and thereby of the angular mis-alignment (toe angle) between the plane of rotation of the vehicle wheels or plane of rotation about the axles for the wheels; the read-out means being adjustable relative to the associated pivoted arm in order to allow for the steering angle at which the "toe out on turns" of the wheel is measured and provide an accurate direct reading gauge.