Constructor Quarterly Issue No. 31
(out of stock - high-quality reprint available)
Mar 1996

Three Different Tractors; A Mother Hen and her Chicks; The World’s First Motorcar; A Crane for Junior Meccano; A Walking Clockwork Motor; An Automatic 4-speed Gearbox; Gyroscopes, Notes and Experiments; A Cement Mixer up the Khyber.

UK £16.00