Take a pen and paper for the working out. Just a decoder box, So needs things to do the working out on, write down.
A box with labled buttons to suit the formula at the bottom of the words.
1 button push to a red LED that lights up that is a number labled to it.
All labled and easy enough.
No need to think ahead apart from the pen and paper.
A bit of a pencil in the final cache but the same pen you will bring is nicer.
Do from footpath/ cycle track on outer ring road. Copenhagen Drive. Not the housing estate side, Fence.
Wont do from housing side.
A repurposed box of tricks from Radley/ Kennington woods area years ago on the old geocaching account.
I though might as well reuse it so labled up to suit this geocache in mind, so I did.
Hide everything out of sight best it can. Decoding device anyway.
Decoding device more important as not making another so if it goes by people in the tree line for a walk or poke around. All over.
Hopefully a nice hiding spot that don't really have people going by too much.
Keep decoding box in the layer of bubblewrap. Stop it getting knocked and keep upright and turned off with side switch. If buttons pressed in the container it wont work as lights up LED's and flatten batteries after a bit.
Final cache location.
N51 40.GJB W001 17.(A-E)BD
A bit of a long hint but trees and the numbers a bit off, will or wont, we all know GPS can be a bit dodgy. I walked back, seems ok and from above on Google maps.
Just want it to be done without people getting too annoyed. Been there, done that!.