Documentation that a measuring or testing instrument (pressure gauges, chart recorders, gas detectors) was calibrated to standard within its required interval.
Why it matters before the job moves
Readings from an out-of-cal tool can be rejected wholesale — taking the job's test results, and the billing they support, down with them.
Software for the boring operational stuff.SYNNR builds purpose-built software for oilfield service companies. Start with TallyShot — photograph a handwritten tally sheet, get clean Excel back.