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> Vintage johnson service co BOOK1931-temperature control
Vintage johnson service co BOOK1931-temperature control
VINTAGE JOHNSON SERVICE CO BOOK1931-TEMPERATURE CONTROL
This book is as seen in photos, purpose of book is to help you appreciate the value and necessity of Automatic Temperature Regulation, to show the part played by the Johnson Service Company in the invention and development of this art and to describe in detail the various articles such as thermostats, valves, dampers air compressors humidostats made by this company, their functions and their qualities.
This book measures about 8 and 1/4" x 11".
This book is in good condition, very little wear.
We accept returns, if the item is not as described, please return the item for a full refund.
