Nason's Damper Regulator, with Safety Attachment. Patented 2d March, 1886. Manufactured and for Sale By Nason M'F'G Co. 71 Beekman Street, New York.
(Nason Mfg. Co.)

New York: Nason Mfg. Co., Illustrated advertisment card for this New York manufacturer of regulators for heaters; with illustration of their equipment in black and white detailing the apparatus on front of card; back with explanation of efficacy of the their device, prices with safety attachment; approx. 5 1/2" x 3" size; no date but circa 1890; light wear; in very good condition and a good example of technological advertising. Very Good (Item ID: 14607)


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