User manual Kodak 4 x 12" 87C Opaque Infrared Wratten 2 Optical 8955593 | PDF-MANUALS.com
Kodak 4 x 4" #12 Deep Yellow Optical Wratten 2 Filter 8075566
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Luminance filter vs Wratten #12 – AstroTuna
Wratten #12 Yellow Filter for Slit Lamp | HAI Ophthalmic
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Wratten #12 Yellow Filter for Slit Lamp | HAI Labs, Inc.
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The American annual of photography . ewriting, rugs, etc. C—Blue, used only in three-color work. F—Deep red for dark mahogany, etc. WRATTEN FILTER PRICES 12 inch,inch,inch,inch,inch,inch,inch, GelatineFilm $ .20 .20 .20 .25 .
Wratten #12 Yellow Filter for Slit Lamp | HAI Ophthalmic
Kodak 4 x 12" #47A Light Blue Wratten 2 Filter 8211088 B&H Photo