328 GiiUBB — A New CoUimatinff- Telescope Gun-SigJd for large and small Ordnance. 

 Among the advantages of the new sight may be enumerated : — 



1. The all-important advantages of having a fore-sight at a great distance in 



front of the gun, and therefore seen sharply defined simultaneously with 

 the object aimed at. 



2. As a consequence of No. 1, no parallax, and therefore no necessity for any 



back-sight. 



3. It is the only sight that can be used with or without magnifying power. 



The image of the + being practically at the same distance as the object 

 aimed at, any form of telescope or field glass when in focus for the object 

 also gives a distinct image of the 4- : consequently it is possible to adopt 

 any telescope or monocular to the sight itself, or apply it in the hand at 

 the back of the sight ; or, a binocular can be used looking with one 

 element through the sight and the other along the side of the sight. In 

 every case a perfectly distinct image of the object with the superposed + 

 will be seen. 



4. Tlie using of a telescope in this way as an auxiliary to the sight is not 



subject to all the disadvantages of the ordinary telescopic sight, as the 

 permanence of the adjustment of the telescope itself has nothing to do 

 with the accuracy of aiming. If the telescope be loose or out of position, 

 it affects the apparent positions of both + and object, but not the relative 

 position of one to another, and therefore permanence or rigidity in the 

 telescope is not necessary. 



5. Any form of cross or device can be used. With the ordinary telescopic 



sight the choice is limited to the simple + or some device that can be 

 conveniently supported from the side of the tube. For instance it would 

 not be jjossible to have a circle O unless with cross lines thus -6-, so 

 that it could be supjjorted in the tube. 



In the new sight the device is formed by cutting lines on an ojDaque film 

 deposited upon a piece of glass, so that any form of cross, circle, square, 

 &c., can be used, or even scale and figures, can be projected on the 

 object, and made useful for the estimation of distance, windage, &c. 



6. The sight can be hermetically sealed so that no dewing on inside surfaces 



can occur, which often gives annoyance in ordinary telescopic sights. 



7. The sight is self-contained, easily detached from the weapon, and has 



absolutely no adjustments, so that it is not posssible to be put out of 

 order or adjustment unless actually broken. 



