The Lightning Adding Machine Co. Inc - wheel vintage calculator

Description

The Lightning Adding Machine Co. Inc.
Los Angeles Calif. U. S. A.
MFG: 1948 ( true piece of history-Mint
Machine has been on Display in the Smithsonian ( National museum of Natural history)
Seven wheeled stylus operated adding machine. Metal case painted gray and covered with felt on the back. It sits in a brown bakelite stand. The two right and two left wheels are brass. The middle ones are steel. mechanism for clearing display.
Machine measures approximately 12 by 2.5 inches.missing stylus and stand
This small seven-wheeled stylus-operated non-printing adding machine has a metal case painted green and covered with felt on the back. It sits in a brown bakelite stand. A stylus fits in the ten holes in each wheel. Placing the stylus in the proper hole and and rotating it enters a digit. The sum appears in seven windows above the holes. The two rightmost and the two leftmost wheels are brass. The three middle ones are steel.