BrownhillsBob's #365daysofbiking

On a bike, riding somewhere. Every day, rain or shine.

Posts tagged ‘480’

#365daysofbiking Feeling flush

 

 

March 11th – I had time to spare so hopped onto the restored canal at Droitwich for a mooch. Just under the railway bridges in the last entry, I noticed this relic of the Ordnance Survey.

Flush Bracket 480 is one of a range of such brackets intended as mapmaker’s datums, the slots in which were for mounting surveying equipment at a known datum – in this case 28.7490m above sea level (the Newlyn Datum).

Now redundant as cartographer’s aids, these are more a historical curiosity than anything else, but I still get a buzz from spotting them in the wild.

You can find out more about this one here.

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