Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 250
193 conveniently located at some central point in the basement or boilerroom. Telethermometer. This is a device for indicating on a dialat some central point the temperature of various rooms or ducts indifferent parts of a building. A special transmitter is placed in eachof the rooms and…
Architecture · Building · Carpentry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
