Globe Geophone Heath Consultants Inc. Stoughton, MA Earthquake Seizmograph No Reserve! From an Estate. I don't know anything about this except the exterior physical condition which is good. Heavy sound sensitive weights are approx. 3.5" in diameter. Weighs approx. 7 pounds total. One of the earpieces has tape on it.....hearing device looks and sounds much like a stethoscope (pehaps it could easily be replaced by another?). Thanks for looking and good luck. Buyer is to pay $8.25 USPS Priority shipping. Insurance is optional at Buyers expense based on the auctions final value. PayPal payments Only, Please. NO Checks . Payment must be received within 5 days of auction's end. I am not responsible for items that are lost or damaged in the mail. All items are sold As Is. All sales are final.