505 (on silver metal part of case under tear drop decimal point indicators
5 1/4 x 9 x 14 1/2 in.
Felt and Tarrant Mfg Co.
Wooden comptometer. Metal device with two long rods going down between keys on the top of the machine (we have one other comptometer with this same metal device - which is quite rare - we have two and one other is known)
Mechanical calculation; Felt, Dorr E.; Tarrant, Robert