. 20th century catalogue of supplies for watchmakers, jewelers and kindred trades. ^ This instrument is now made with two round plates to cover the discs, not as shown in cut. No. 151. Optometer, Simple, with Single Disc and Spherical Lenses, only, each 152. Optometer, Compound, with Double Disc and Spherical and Cylindrical Lenses, each Pamphlets describing above instruments sent upon application. .$ . For Watchmakers, Jewelers and Kindred Trades. 719. TRIAL SETS. Positively the Ijesl and cheapest made. Quality guaranteed. No. 153. Natchet style, set of First Quality Trial Lenses i
. 20th century catalogue of supplies for watchmakers, jewelers and kindred trades. ^ This instrument is now made with two round plates to cover the discs, not as shown in cut. No. 151. Optometer, Simple, with Single Disc and Spherical Lenses, only, each 152. Optometer, Compound, with Double Disc and Spherical and Cylindrical Lenses, each Pamphlets describing above instruments sent upon application. .$ . For Watchmakers, Jewelers and Kindred Trades. 719. TRIAL SETS. Positively the Ijesl and cheapest made. Quality guaranteed. No. 153. Natchet style, set of First Quality Trial Lenses in Rings 1% inches in diameter, consisting of 30 pairs each Concave and Convex Sphericals, from to 20. D. (160 to 2 inches) focus; 18 pairs each Concave and Convex Piano Cylinders, from 0 25 to 6 D. (160 to Qyi inches) focus; 11 Prisms, 1 to 20d; 4 Plain Colored Glasses- 1 White Glass; 1 White Glass, half opaque; 2 Stcnoptic Discs; 1 Blank Disc; 1 Disc with Hole; 1 Perfection Patent Adjustable Trial Frame; 1 Single or Double Cell Trial Frame, each $58 75 The above m a Morocco Covered, Velvet Lined Case with Lock, and with ifocus numbers stampediA inchesand diopters. 154. Same as 153, adding Nickel-plated Steel Rings, with plus and minus signs cut in handles, each 155. Natchet style set of First Quality Trial Lenses in Rings V/z inches in diameter, consisting of 33 pairs each Concave and Convex Sphencals, from to 30. D (160 to 3 inches) focus
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, bookid20thcenturyc, bookyear1899
