Projection Apparatus (1917)

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)--*+ Bausch & Lomb Optical Company Figure 9—Special Portable Model C Balopticon CGP in Case. NOTE—We recommend that an extra Mazda lamp be included in traveling outfits equipped with this form of illuminant to guard against breakage or burning out. Space for this extra bulb is provided in both types of carrying case. The 400-watt Mazda lamp with clear globe is $5.00 net (see “Accessories”). The above outfits are listed with the 10-inch focus lens, which is the one generally required. The 12 or 15-inch focus lens can be supplied at the same price. If one of these is preferred, substitute “12” or “15” for the numeral “10” in the above catalog numbers. 35