[Auausr, 1901. ] 
THE 
SCIENTIFIC TRANSACTIONS 
OF THE 
INO) SCAIE IDE GION SOC uD an NY, 
VOLUME VII—(SERIES II.) 
X. 
A NEW COLLIMATING-TELESCOPE GUN-SIGHT FOR LARGE AND SMALL 
ORDNANCE. 
By SIR HOWARD GRUBB, F.R.S., Vice-President, Royal Dublin Society. 
(Prats XXYVI.) 
DUBLIN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 
WILLIAMS AND NORGATE, 
14, HENRIETTA STREET, COVENT GARDEN, LONDON ; 
20, SOUTH FREDERICK STREET, EDINBURGH; anv 7, BROAD STREET, OXFORD. 
PRINTED AT THE UNIVERSITY PRESS, BY PONSONBY AND WELDRICK. 
1901. 
