The QMSys GUM program is used to analyze the uncertainty of physical measurements and calibrations. The analysis and computations follow the rules of the of the official documentations:
- ISO Guide to the expression of uncertainty in measurement
- EA-4/02 Expression of the Uncertainty of Measurement in Calibration
- DKD-3 Angabe der Messunsicherheit bei Kalibrierungen
- EURACHEM/CITAC Guide, Quantifying Uncertainty in Analytical Measurement
- ANSI/NCSL Z540.2 - U.S. Guide to the Expression of Uncertainty in Measurement.

The software uses the uncertainty propagation (GUM) method to calculate the measurement uncertainty.

The most important features offer:
- Suitably for linear models
- Max. 10 input and 1 output quantities
- Distributions: Normal, Lognormal, Student?s t, Rectangular, Triangular, Trapezoidal, curvilinear Trapezoidal, U-shaped, Quadratic, Exponential, Cosine, 1/2 Cosine
- Direct and indirect methods of observation
- Statistical evaluation of Typ A quantities

This software is completely free for educational purposes!

• QMSys GUM Professional 4.6
  The QMSys GUM program is used to analyze the uncertainty of physical measurements and calibrations. The analysis and computations follow the rules of the of the official...

• QMSys GUM Enterprise 4.6
  The Uncertainty Workshop program is used to analyze the uncertainty of physical measurements and calibrations

• QMSys GUM Standard 4.6
  The QMSys GUM Standard offers the classical calculation of the measurement uncertainty for linear models of the measurement process according to GUM Uncertainty Framework. The analysis and computations follow the rules of the of the official...

• Instant Unit Converter 2.1.0.1
  Instant unit converter is a powerful tool and easy-to-use

• Scientific Calculator Precision 54 1.0.1.5
  A handy, fast, reliable, precise tool if you need to perform complex mathematical calculations. Scientific Calculator Precision 54 is programmed in C#. All calculations are done in proprietary data type. The calculator handles mathematical formulas of any length and complexity. Calculation history can be stored into text file or printed. There...

• Scientific Calculator Precision 63 1.0.1.3
  A handy, fast, reliable, precise tool if you need to perform complex mathematical calculations

• Get Bigger Breasts by Chewing Gum 1.0
  Get Bigger Breasts with Gum toolbar for Firefox