The Felt & Tarrant MFG Co. Comptomer trade adding machine is a rare and antique vintage adding machine manufactured in Chicago, USA. Known for its precision and durability, this adding machine services a valuable piece of history in the worlds mercantile and trades. This unique item holds both and practical value for collectors and enthusiasts of vintage adding machines. Manual is in good shape and complete. Pat'd June 24, 1913 & Dec 2, 1913. $75.00. Phone or e-mail only please. Thanks for looking.