Furnace Small 320×159 Medium 640×318 Large 1024×509 Download Tiff Original 2400×1193 | (851.5 KB) Description "Automatic Oil Muffle Furnace." — The Encyclopedia Britannica, 1910 Keywords automatic, furnace, muffle, oil Galleries Miscellaneous Industrial Machinery Source: The Encyclopedia Britannica, Eleventh Edition (New York: The Encyclopedia Britannica Company, 1910)II:72
