1). SELECT LETTER CODE
Grid Reference must apply to region covered by walks done by Penrith Ramblers,
otherwise it will be rejected. (Letter code NY covers the majority of the region.
SC, SD and SE run west to east all along its southern edge, while
NX and NZ are to the west and east of NY respectively.) NX NY NZ SC SD SE

2). ENTER THE EASTING - (Use 2 or 3 digits.)

3). ENTER THE NORTHING - (Same no. of digits as Easting.).