Darley Dipping Needle Miners Compass and - Keuffel Esser Drafting Tools. W. S. Darley & Company Magnetic Dipping Needle Compass Miners. Both in Boxes or Case. Lot Size 17" x 5" x 3". 3 Lbs. All information and photos, which are part of the description, are intended to be as accurate as possible, but errors are possible. No item may be returned or refused based on this information, which is provided as a service to bidders. Please read terms & conditions and ask questions before bidding.