Service truck inventory checklist: how to stop losing parts between jobs

A service truck can quietly lose money all week if nobody knows what is actually on it. I learned this on small local service jobs where the technician had almost every part, except the one fitting or screw size needed to finish. The customer saw it as a second trip. The office saw it as schedule pressure. The truck just looked full. The checklist has to be built around real jobs, not a generic p…