Check the listing for details. Gould 13-6615-58 Bioelectric Module For 6600 Amplifier Case Chassis. Condition: Used. Listed at 110.00 USD. Gould 13-6615-58 Bioelectric Module For 6600 Amplifier Case ChassisAppears in good to fair vintage condition externally. Operating condition and reliability unknown. Pulled from chassis that has been powered on and which has multiple modules installed. See pics, nothing else included. Click on our Business & Industrial links like Measurement, Test & Science to see related items. Thanks for looking!Customer Satisfaction Limited Guarantee Returns accepted within 30 days of delivery, please contact Seller before opening return caseAny refund will be money back or eBay store credit with Seller's approval.Any return shipping will be paid by Buyer.Domestic US Standard Shipping (2 to 5 business days) Surcharge for AK or HI Handling time : 1 business dayAsk about expedited shipping International shippingYou're sending to the US shipping center using the Global Shipping Program.No Alternative international shipping optionsContact us if you want to special price