Theodolite & Level

Thank You to Kanyl for the inspiration for the Blip.

My father was an architect - a good one. He was awarded an OBE for his work.
When he retired he was presented with these as a reminder .... 

I don't know how old they are, but I found out there is a 'museum' at Heriot Watt University at the Institute of Civil Engineers .... they may be able to help.