Babbage Difference Engine No. 1, demonstration piece (three-quarter-scale replica)
There is a plaque attached to the base that reads "To T. Vincent Learson with appreciation and admiration from his associates in IBM, December 1972". Often referred to as "the beautiful fragment."
Guatelli, Dr. Roberto
overall: 18 1/2 in x 18 1/2 in x 13 1/2 in
Mechanical calculation; Mathematical table; Babbage, Charles
Gift of Katherine Learson