HC Deb 31 December 1916 vol 88 c1635
122. Mr. LYNCH

asked whether the defences of London have the advantage of an efficient range-finder against Zeppelins; and, if so, why it has not been used effectively?

Mr. MACPHERSON

Yes, Sir; these defences are provided with an efficient range-finder, and it has been used effectively, but its use does not in itself guarantee that targets will be hit.

Mr. LYNCH

Is not that the very test of the efficiency of a range-finder, and is it not a fact that a range-finder could be provided which would inevitably result in any Zeppelin flying over London being brought down by the guns?