Specifications and features. Analysis and calculations are carried out according to procedures and formula given in below publications: "GUM:1995" BIPM/IEC/IFCC/ISO/IUPAC/IUPAP/OIML "Guide to the expression of uncertainty in measurement" EAL R2, "Expression of the Uncertainty of Measurement in Calibration". (1997) ISO/DTR 14253-2: "Geometrical Product Specifications (GPS) – Inspection by measurement of workpieces and measurement equipment – Part 2: Guide to the estimation of unceirtainty of measurement, in calibration of measuring equipment and in product verification" (PUMA–method). NIST Technical Note 1297 Guidelines for Evaluating and Expressing the Uncertainty of NIST measurement Results. NIST=National Institute for Standards and Technology. Full implementation of type A and type B uncertainties. Probability distributions supported include Normal, t-, U-, recangular, tringular- eller trapezoidal distribution. Statistics are handled on-line using typed-in or imported measurement data. Type A uncertainties may alternatively be transferred to GUM Workbench using a pooled variance estimate. Sensitivity coefficients are calculated automatically using numerical partiel differentiation. Full support for combining the individual number of degrees of freedom for different inputquantities using Welch-Satterthwaite's formel. Works with standarduncertainties and expanded uncertainty. Coverageprobability and coveragefactors according to EAL R2. Correlation is handled in full coordination with sensitivity coefficiens. Users of GUM Workbench may now forget any necessary simplifications previously used in setting up uncertainty budgets. Treatments of correlation in simplified terms of geometrical and aritmetical summing are obsolete. Reports produced with GUM Workbench include the full uncertainty budget. Users may control the extent of report. Report may be printed to paper or transferred via clipboard or datafiles. Two different text formats are supported (Text only and RTF format). Facilities for structured information allows documentation of changes and amendments to be recorded in freely editable fields. Each subcomponent of an uncertainty budget has editable fields allowing the user to keep comments right where they belong so that conditions and assumptions are documented along with the budget. In this way users of GUM Workbench may integrate information required for measurement uncertainty budgeting with the day-to-day realities of laboratory and metrology room. Linking of uncertainty budgets to describe a full hierarcical metrology system. If basic data change, e.g. when aquiring new measuring equipment, only one change needs to be made describing the uncertainty components associated with the changed equipment. Updating of all uncertainty budgets which depend on that equipment follow automatically by GUM Workbench. Supports international exchange of knowledge in the field of metrology: GUM Workbench is delivered with setup files allowing operation of the user interface in English, German and Danish (our current selection of languages). Report formats may be set to nay of these languages as well. GUM Workbench has many additional features and possibilities. Please contact us for further information. Upon request we will mail demo-diskettes free of charge to interested companies or persons. Runs under all current Windows versions