§ Mr. Rooker
To ask the Secretary of State for Defence if he will list those areas of defence procurement in which specifications for manufacture are in(a) metric and (b) imperial measurements. 
§ Mr. Arbuthnot
Defence procurement covers a wide range of product areas from clothing to guns, ships and battle tanks. In each of those areas there is a mix of metric and imperial specifications. Generally it has been MOD practice to use metric measurements since the early 1970s for all procurement. However, spares procurement to maintain some older in-service equipment may still use imperial measurements.