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Werder AG introduces the ultimate tool for mechanics. MechTab provides information about ISO-Tolerances, Threads, Cutting Data, Wrench Size and Roughness.

Tolerances: A - ZC, holes and shafts

General Tolerances: Charts for linear dimensions, radii/chamfer and angular dimensions.

Geometrical Tolerances: Symbols, drawings and explanations as well as charts for the different geometrical tolerances.

Threads: BA, BSF, G, Heli-Coil, M, MF, Pg, Tr, UNC, UNEF, UNF, W, Metric-Non-Standard

Cutting Data: Cutting Speed and Spindle Speed, Feed Rates, Processing duration

Wrench-Size to Width across Corners: 4-,6-8-,10-,12-,14-Cornered

Torque: 3.6, 6.9, 8.8, 10.9, 12.9

Roughness: Rz, Ra, N, Triangle-Notation

Weight: calculate the weight of different materials in different profiles. Material list is editable.

Triangle: calculate sides, angles and the area of a triangle by entering 3 values according to a drawing.

Trowalisation: calculate the number of pieces

What’s New

Version 2.7

With this version we fix some bugs. Besides that we introduce a news view which is only visible if there are any news published.

Ratings and Reviews

5.0 out of 5
4 Ratings

4 Ratings

Cphf ,


This app has become invaluable. It is very easy to use with a wide variety of useful information. We're recommending it to all our new apprentices.

titleistprov ,

Good for engineering students

This app covers many of the basics for engineering apprentices. Can used on the shop floor and in the classroom

Shatters Bassoon ,

Engineers must have App

Superb convenient App for anyone in the engineering industry be it inspection or machining.
A godsend.


Samuel Werder AG
29.6 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.


English, French, German, Italian

Age Rating
Rated 4+
© Samuel Werder AG


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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