Details
A Comptograph printing calculator
by Felt & Tarrant Mfg. Co., Chicago, with eight-digit capacity, in mahogany case with raised section at rear for paper roll and nickel-plated maker's plaque on right with patent dates to 1897
by Felt & Tarrant Mfg. Co., Chicago, with eight-digit capacity, in mahogany case with raised section at rear for paper roll and nickel-plated maker's plaque on right with patent dates to 1897