classic33
Leg End Member
The flat stones, usually at ground level, opposed to the pillars.I assume you mean the bench marks?
I've used OS Locate app at each one and it gives a six figure reading,
eg. Beith Old Church t'other day..
OS Locate says NS 351 539
OS CBM database file NS 3518 5395
Give a rough estimation to track down on the database.
I'm looking for some I used my Etrex 30 but as usual, I can't find anything, I'll try to get something done.
Three maps(OS) give a different location for a nearby one. Abou 120 foot difference between the extremes. Marked as not there, but the pictures and latest map showing it are too far SE.