You must turn on the browser location services to get the route from your current location to the sign, and the distance (as the crow flies) from your current location to the sign.
After activating location services, refresh the page.
On the sign:
IMPERIAL STANDARDS OF LENGTH PLACED ON THIS SITE BY THE STANDARDS DEPARTMENT OF THE BOARD OF TRADE BY THE PERMISSION OF THE COMMISSIONER OF HER MAJESTY’S WORKS AND PUBLIK BUILDINGS MDCCCLXXVI
[Plaque below] STANDARD OF LENGTH AT 62 FAHRENHEIT
The sign placed in 1876 shows the standard length of 3 units of length measured at a temperature of 62 degrees Fahrenheit.
Three standard lengths are displayed above the sign (a foot, 2 feet, and a yard), below is the manufacturer’s name TROUGHTON & SIMMS LONDON (a company specializing in the manufacture of scientific instruments) were taken that day Click for a larger image