Measuring Sheffield

I've lived and worked in Sheffield for 12 years now and yet I still sometimes come across things that I've never noticed before. For example, last Thursday I walked down the side of the Town Hall and spotted this set of standard measures.

In fact there was a lot more than just this one plaque as the floor has small plaques set into it to show longer measures.

Apparently the standard measures were "presented to the city by The Right Honourable The Lord Mayor (The Earl Fitzwilliam, D.S.O.) and by him declared available for public use on the occasion of the visit of the British Association, September, 1910".