Instrument Toolbox Engineer

Instrument Toolbox is a professional calculation and reference app designed for qualified instrument technicians and engineers with PDF export function on calibration records and daily job logs, daily job logs are stored and can be located again also.

This app with 1 time in app purchase provides a collection of commonly used instrumentation calculations in a fast, offline, and easy-to-use format, helping reduce manual errors and save time in the field or workshop.

Features include, but some are restricted until gain Pro:

4–20 mA scaling and signal conversions
mA to % and % to mA calculations
Pressure and differential pressure conversions
Flow and DP calculations
Temperature conversions (RTD and thermocouples)
RPM and frequency (Hz) conversions
Axial displacement and probe gapping tools
DP level calculations (LRV / URV)
Calibration record tool inc % error with PDF export
Gas Correlation Calculator
Displacer with interface functionality
Job logs with history retriever


• Pro version – full editable calculation, cal record and daily log features

The app is designed for offline use and does not collect, store, or share personal data. All calculations and records are handled locally on the device.

This application is intended as a calculation and reference aid for trained professionals.