Telescopic Sight

Telescopic sight mounted on a rifle.

Telescopic Sight - An optical sight, offering some magnification, often variable, with some kind of adjustable aiming grid inside (a reticle), which when mounted on a firearm, usually a rifle, makes sighting easier.  Using iron sights, as one ages, presbyopia (the deterioration of nearfield focusing ability) makes it difficult to focus simultaneously on the three planes of rear sight, front sight, and target. It is easier to aim a rifle with a telescopic sight because one may simply place the reticle on the target.

Telescopic sights are designated first by their power, and then by the diameter of their objective lens.  4x20 would mean 4 times magnification and with a 20mm objective lens.  3-12x50 would mean a variable scope, adjustable between 3 and 12 times magnification and with a 50mm objective lens for better light gathering.


The Hallowell & Co. Illustrated Firearms Dictionary is for informational purposes only. We do not necessarily offer the items described above for sale. Please click on any of the links below to see what we actually do have available for purchase.

American Shotguns      English Shotguns       European Shotguns      Double Rifles      Magazine Rifles        Single Shot Rifles      Combination Guns

Winchester      Colt      Smith & Wesson        Other Handguns          Antique Guns       New Arrivals             Custom Knives          Other Neat Stuff


Who We Are       How to Order      We want to buy your Gun(s)       Recommended Links     Historical Gallery         

Firearms Definitions, Abbreviations & Opinions     Store Photos     Magazine Articles          Home  

Hallowell & Co., Inc. PO Box 1445. Livingston, Montana  59047   USA   Tel: 406 222-4770    Fax: 406 222-4792     Email:

Hours: Tuesday - Saturday, 10 - 6.   (Mountain Time)   Our inventory is constantly changing. Please bookmark this site and return often.