Classified and illustrated price-list and catalogue of photographic lenses, cameras, apparatus, and materials : made, imported and sold wholesale and retail by James WQueen & Co . the simplest form of drop, and effectivewhere too great rapidity is not desired. No. p-170p-171p-172P-173p-174 P-I75p-176 Adaptable to Lenseswith hoods of Price. Simple Instantaneous Shutter, iffj-in. diameter and less, $1 25 234 1 50 1 75 2 002 252 502 75 QUEEN & TIME AND INSTANTANEOUS PNEUMATIC SHUTTER. P-185. Adaptable to lenses with hoods of i^-inch diameter and less- ? • ... $5 00 p-186. Adaptable to lenses
Classified and illustrated price-list and catalogue of photographic lenses, cameras, apparatus, and materials : made, imported and sold wholesale and retail by James WQueen & Co . the simplest form of drop, and effectivewhere too great rapidity is not desired. No. p-170p-171p-172P-173p-174 P-I75p-176 Adaptable to Lenseswith hoods of Price. Simple Instantaneous Shutter, iffj-in. diameter and less, $1 25 234 1 50 1 75 2 002 252 502 75 QUEEN & TIME AND INSTANTANEOUS PNEUMATIC SHUTTER. P-185. Adaptable to lenses with hoods of i^-inch diameter and less- ? • ... $5 00 p-186. Adaptable to lenses with hoods ot i^-inch diameter and less, . ^ 2^ p-187. Adaptable to lenses with hoods of 2-inch diameter and less> 5 50 p-188. Adaptable to lenses with hoods of 2^-inch diameter and less, ^ 5. p-189. Adaptable to lenses with hoods of 3-inch diameter and less • • • . 600 p-190. Adaptable to lenses with hoods of 3^-inch diameter and less, 6 25 p-191. Adaptable to lenses with hoods of 4-inch diameter and less 6 50 James W. Queen & Co., Philadelphia. 31 THE QUEEN | T and I 1 SHUTTER. 1? Time and Instantaneous. f§ (Burrows Patent.) THE LATEST AND VERY COMPACT, FINELY FINISHED, STRONGLY IMPOSSIBLE, MOVABLE PARTSLIGHT, NO JARRING OF IN-STRUMENT. This Shutter is noted for its compactness, and on account of it?form is strong and will stand hard usage. It is finished in the verybest manner, and while strongly made, the moving parts are exceed-ingly light and simple. The greater part of this instrument being turned work, the most 32 James W. Queen & Co., Philadelphia. faultless accuracy is obtainable, as well as the perfect finish whichis always given fine work of this class. This accuracy of the inclos-ing case and moving parts is plainly indicated by the very lightspring, which easily produces the highest speed with the only suffi-cient power to overcome the inertia—friction is reduced to a minimum. The opening is symmetrical, beginning from the centre
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectopticalinstruments
