Malcolm Rifle Scopes
The Malcolm rifle telescope, manufactured by the Malcolm Rifle Telescope Manufacturing Co., Syracuse, N. Y., and shown in Figure 7, attached to a Winchester rifle, is made of all grades, high or low power, long or short tubes. Special attention is given to the construction of short glasses, from 12 to 20 inches. They are made of two sized tubing, neatly joining the two sizes together, thereby getting a larger tube in front for a large obstructive and a smaller tube in rear for the eye piece. In so doing we not only produce a neat looking telescope, but also gain otherwise, in producing a very large field with sufficient light for the glass to be used in very dark days and in all kinds of places, such as dense woods and other dark places, making it an excellent hunting sight. There is an unique arrangement with these glasses. It consists in cutting two slots at the rear end of the glass to adjust and correctly focus the cross-hair. In looking through the glass at an object, observe whether the cross-hairs are perfectly stationary or whether they move when you shift your eye up or down. If perfectly stationary they are in correct focus with your eye. If they move you must unloosen both little screws which hold the cross-hair setting, and move the setting forward or the other way until you strike the proper spot where the cross-hair stands still and without any motion. No matter how much you shift your eye, tighten down the screws and that part is corrected. Now, to focus the glass correctly for distance, the other single slot in the glass indicates where that is done; by unloosening the screw the object lens setting can be shifted forward and back, as the case may require. The glass only needs adjustment for distances less than 50 yards; beyond 50 yards, no alteration is necessary except in glasses of very high power, which require focusing for almost any change in distance. These glasses are made to fit all prominent rifles.
Farrow, Edward S. American Small Arms; a Veritable Encyclopedia of Knowledge for Sportsmen and Military Men. New York: Bradford, 1904. Print.
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