MechTab for PC

Workshop engineers and machinists who spend hours at a desk need reference material within arm's reach, not buried in a phone you have to pocket between tasks. MechTab brings ISO tolerances, thread specifications, cutting data, wrench sizes, and material calculations to your desktop, letting you keep technical tables visible alongside your design software or CAD window. If you're verifying a dimension, confirming a thread pitch, or double-checking spindle speeds, having MechTab for Windows PC means you stay in your workflow without switching devices.

MechTab is a technical reference application built for machinists, engineers, and workshop professionals who need instant access to standardized data. The app consolidates multiple lookup tables and calculators into one place on your computer, reducing the time spent hunting through manuals or cross-referencing printed charts. On a desktop setup, MechTab sits comfortably beside other tools, letting you input values with a real keyboard and keep results visible in the background on adjacent tasks.

Core Reference Data at Your Fingertips

MechTab provides comprehensive coverage of ISO tolerances, including general tolerances for linear dimensions, radii, chamfers, and angular measurements, plus geometrical tolerance symbols and explanations. The app includes detailed thread specifications spanning BA, BSF, G, Heli-Coil, M, MF, Pg, Tr, UNC, UNEF, UNF, and W standards. Cutting data tables cover spindle speed, feed rates, and processing duration calculations. Wrench-size lookups handle 4-, 6-, 8-, 10-, 12-, and 14-cornered fastener geometry. Roughness values use Rz, Ra, and N classifications, plus triangle notation.

Calculators for Daily Workshop Tasks

Beyond static reference, MechTab includes working calculators for material weight across different profiles: the material list is editable letting you add your shop's inventory. The triangle calculator lets you solve for sides, angles, and area when you have three known values. A trowalization feature estimates the number of pieces per machine load, useful for batch planning. These tools let you avoid reaching for a separate calculator app or scrap paper while keeping your session organized on one screen.

Desktop-Based Workflow Integration

Running MechTab on PC gives you the option to keep a session open all day on the same machine without losing your place. You can reference a tolerance, make a note in a text editor next to it, then move to your next task: all within your existing workspace. The keyboard-based input is faster than tapping a phone screen for repeated lookups, and a larger display letting you read fine print in tolerance charts and thread tables without straining. This setup suits professionals who work from a bench desk or office and need reliable, immediate access to standards without fumbling for a mobile device.

Known Limitations and Data Concerns

Users have reported factual inaccuracies in some values: for example, tightening-torque ranges for certain fastener sizes listed outside practical bounds, and tolerance data displaying as zeros in some edge cases without clear warning. Triangle calculations have produced invalid results (angles summing above 180 degrees), raising questions about the reliability of geometric functions. The app also lacks some features machinists frequently request, such as drill-size conversion charts or tapping-size tables integrated into the thread section. Before relying on any calculated result for critical work, cross-check values against official ISO documentation or your shop manual.