Slide rule used by Johnny Berry
Slide rule used by Rusholme bicycle frame builder Johnny Berry
Johnny Berry was the team mechanic at the 1948 Olympic Games, and a Manchester frame-builder of great national and international reputation. He was an avid cyclist and an active member of the Manchester Wheelers. His shop was a well-known sight in Rusholme where for 28 years where Berry built and refined his bike designs in the workshop at the back.