Project accounting for per-unit work
Bill by the unit, not just the hour.
Per lot, per plat, per sample, per inspection — a real billing method, mixed cleanly with hourly and fixed-fee on one project and one invoice. The field crew just logs time; the PM decides what to bill.
Per-unit, natively
Unit description, rate per unit, quantity — a first-class billing type, never a fixed-fee or expense workaround.
Truly mixed invoices
Hourly, fixed-fee, and per-unit lines coexist on one invoice, grouped by discipline. No dual entry, no month-end hacks.
Hours stay internal
Time logged on per-unit work feeds cost and profitability but never appears on the client's invoice.