Tool Checkout Board

Three mutually reinforcing layers: visual accountability (shadow boards or cut-foam drawers where absence is obvious), transactional accountability (this checkout log — who, what, which aircraft, due back), and the closing rule that gives both teeth: tools reconciled before panels close and at shift end, with a missing tool treated as a grounding event until found or the search formally documented. Airlines and MROs run exactly this; the owner-hangar version is the same discipline at smaller scale, and it's what keeps wrenches out of control runs.

The discipline scales down better than the alternative: one out-of-cal torque value, one lost tool's grounding search, or one insurance claim against an unitemised inventory each cost more than years of thirty-second entries. Small operations skip the systems because nobody requires them — then meet the requirement retroactively, at incident prices. The board is the cheap version of that lesson.

Clearing site data deletes locally stored entries — that's the price of a genuinely private, server-free design. Protect yourself with the one-click CSV download before any cleanup, OS reinstall or device change: re-importing history later beats reconstructing it from memory.

A plain CSV with one row per entry and labelled column headers — the most portable format there is. Spreadsheets open it directly, most specialised software can map it on import, and a printed copy is perfectly legible to a human reviewer. Nothing proprietary means your shop record is never trapped here.