Seller: radiascence (3,026) 100%, Location: Ventura, California, Ships to: Worldwide, Item: 312022484355 VINTAGE WELCH ELECTRIC LIGHT BULB CIRCUITRY SCIENTIFIC LABORATORY MODEL 1930 EDUCATIONAL DESIGN: A rare and impressive vintage Welch Scientific Laboratory Educational electric light bulb circuitry board circa 1930-40's. The parts are manufactured of wood platform, stainless steel hardware, bakelite sockets and porcelain ceramic switch, all highest quality machining and manufacture. The complete circuit board assembly can be utilized to demonstrate various patterns of electrical circuitry by connecting/disconnecting the myriad of switch points. Initially intended for classroom demonstrations this amazingly visual relic can be utilized as a piece of functional sculpture today, the board presents impressively as-is or could easily be mounted on a wall in any direction desired.CONDITION: This early instruction circuity model is in exceptional original condition, completely intact and fully functional. Just moderate signs of wear with no obvious damage, just faint surface wear and light patina from age. The contact points can be a little sluggish in some areas simply due to years of accumulated oxidation from not being used, but all can be brought to life by a few repeated motions to gain an active contact point. All sockets, fuses and wiring are original and have been inspected to be clean, safe and completely functional. Due to the fragile antique nature of the filament light bulbs shown they are NOT included as I cannot guarantee their functionality...that said new contemporary reproductions of these early "Edison" style light bulbs can be found all over ebay and the internet and will have a much more reliable shelf life than any vintage bulb could offer. DIMENSIONS: The models platform base measures 30'" X 8" with an overall height of 4" without the light bulbs...filament light bulbs shown are NOT included due to their extremely fragile nature.