Catalog of stereopticons, motion picture machines, projection apparatus : manufactured and imported by the McIntosh Stereopticon Company . Also that they show better, the details of thepicture. They are certainly excellent screens, but are not w^hatis claimed for them by some manufacturers. The prices of these various styles of screens follow: Both the opaque white screens and the ahnninuni finislied screensare quoted, mounted on a heavy, suhstantial sprinj? roller, bracket anda board with screw eyes, so that it can be readily mounted on the wallor in such otlier way as desirable. Opaque Alumi
Catalog of stereopticons, motion picture machines, projection apparatus : manufactured and imported by the McIntosh Stereopticon Company . Also that they show better, the details of thepicture. They are certainly excellent screens, but are not w^hatis claimed for them by some manufacturers. The prices of these various styles of screens follow: Both the opaque white screens and the ahnninuni finislied screensare quoted, mounted on a heavy, suhstantial sprinj? roller, bracket anda board with screw eyes, so that it can be readily mounted on the wallor in such otlier way as desirable. Opaque Aluminum Size. Muslin. White. Finish. 6 ft. sq $ $ $ 7 ft. sq 8 ft. sq 9 ft. sq 10 ft. sq 12 ft. s(| 15 ft. sq * * 18 ft. sq *M:ade to order only. 20 ft. sq Prices of other sizes 24 ft. sq on request. SCREEN ROPE. PRICE, per skein of 100 feet $ We furnish the l)est qualitj sash weifj^ht cord, very andwill not stretch. M( IXTOSH STEREOPTIOON CO., CHICAGO, , U. S. A. PROJECTING Our objectives are made in three sizes of mountings which areexactly the size of the three circles above. The circles correspondto the outside diameter of the rnner tube or barrel into which thecells holding the glasses screw. Objectives have for years been designated by the fractions i4» /^and %, indicating the size of the mounting, focus and size ofthe negative plate thej^ would cover if used on a camera. To thelantern operator these fractions are fast losing their significance andshould indicate simplj the size of mounting, thereby eliminating muchconfusion of ideas, especially to the person who is trying to pick outa proper lens to meet his special requirements. The size of a picture made by a lens docs not depend on the sizeof the mounting, but upon its focus, and the focus is governed by thecurve or shape the lens glass is ground. To obt
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