There are some general equipment items that one should consider taking on a benchmark hunting expedition. Sometimes a benchmark hunting trip can involved more than you thought when you started out. Here's a list to read to remind you of what you might want to take along.
Insect repellant sting medication
Garden hand shovel
A pack to carry all your stuff
Machete axe (for thick brush)
Flashlight - perhaps time and distance slipped by as you searched!
GPS and spare batteries.