Umpire’s should carry the following equipment onto the field:Counters, and a spare.
Watch.
Pencil / pen and paper.
Match Record Card
MCC Law Book.
Rules of Competition.
Match Ball, and spare.
Bails, and spare.
Bowler's marker.
Drying material - towel.
In addition the following may be useful:
Small scissors / pocket knife.
Small First Aid kit
e.g. - safety pin, plasters, paracetamol, antiseptic wipes.
Bulldog clip or similar.
Ball gauge
And these items may be useful but need not be carried onto the field during play:
Tape measure.
Bottle of water (for stumps)
Wicket gauge
Bat gauge
Image from ECB ACO Training Course