[Photos (6) and negatives (8) re work on strain gauges at AEI Ltd. of Leslie Ireland. With board of 9 strain gauge elements. 1960s. 15 items. Ireland specialised in strain measurement on the blades of power generation turbines. With board of 'Matched Strain Gauge Elements' of H. Tinsley & Co.Ltd., London dated 1962 Mar.] Photos and negatives re work on strain gauges at AEI Ltd. of Leslie Ireland 1960s