Vintage Joseph G pollard Caps/Plugs w/ Chains on Wood Holder, Pair (2 pcs) For Sale

Vintage Joseph G. Pollard Co. Acoustic Geophone Water Leak Detector SetUp for sale is a rare, authentic piece of industrial history: a vintage mechanical acoustic geophone pipe leak locator set, manufactured by the Joseph G. Pollard Co. Inc. out of New Hyde Park, New York. This battery-free, purely mechanical listening device was the go-to field tool used by municipal water departments, plumbers, and utility crews throughout the mid-20th century to pinpoint underground pipeline breaks. Item Condition & Features:* Authentic Maker's Mark: The interior of the heavy brass bell cavity features the official, cast circular trademark stamp from Joseph G. Pollard Co. complete with its iconic central fire hydrant emblem. * Heavy Brass Modules: Includes a matching pair of heavy, sand-cast brass geophone sensing pucks with their original brass connecting linkage chain intact. * Original Wooden Mount: The modules come resting on their original custom-slotted dual wooden block insert tray, complete with the dual metal alignment pins on the bottom plate. * Cosmetics: In beautiful, uncleaned vintage condition with a gorgeous, authentic industrial brass patina. It shows normal field tarnish, minor surface scuffs, and character wear consistent with age and municipal utility use. What’s Included:* (2) Vintage Joseph G. Pollard Co. Brass Geophone Sensing Modules* (1) Attached Brass Connection Linkage Chain* (1) Original Dual-Slotted Wooden Base Mount/Insert Tray*(Note: This listing includes the exact items pictured on the wooden base tray; the outer wooden transit chest, listening hoses, and headset are not included).*This is a fantastic addition to any collection of antique industrial tools, plumbing memorabilia, civil engineering history, or early acoustic instruments. It makes for an incredible display piece just as it sits!