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Aeronautical & General Instruments Ltd, will exhibit their R 128 recording cameras, designed to photograph the information displayed on the cathode ray tube of an aircraft's reconnaissance radar.

CONSIDERABLE interest is being shown in the progress of the Westland‐Agusta EH101 with the nine pre‐production aircraft exploring every aspect of the helicopter's development and potential applications. The Royal Navy order in 1991 for 44 of the anti‐submarine warfare (ASW) version has been followed by a Canadian requirement for 50 and the likelihood of an Italian order, also for the ASW version. Meanwhile, the UK, Italy and the Netherlands are considering the rear‐ramp equipped military utility variant for their long range logistic and tactical support helicopter. The 30‐seat Heliliner civil version is being considered by the North Sea oil support industry. Civil certification for the EH101 is planned for 1993 and two aircraft are scheduled to undertake a 6,000 hour maturity flying programme to ensure reliability when the aircraft enters service.

The results of five experiments on design of work stations are discussed. The first two experiments investigated the effects of work surface height on performance, the third investigated eye‐hand coordination at two heights and directions of movement, the fourth investigated both height and direction of movement, and the fifth studied the effect of angle and direction (in versus out) of movement. It was found that the optimum height is about one inch below the elbow. The effect of angle at a height is important: the best moves for a right‐hand movement are at 45 degrees.

Invented and manufactured by the French company AHG (Ateliers de la Haute‐Garonne), the MATT rivet has been specially formulated to prolong the life of riveting in thin sheet metals. The original design allows controlled expansion of the head and shank, and most importantly, the head expands into the countersink to ensure a precise interference fit which does not require additional sealants.