Formeln & Tabellen Metall is a free Android app developed by EUROPA-LEHRMITTEL. This app is a valuable complement to the table book metal, offering quick and easy conversion of base units, calculation of angle functions, as well as determination of hardness values and fitting tolerances.

The app covers a wide range of units and calculators in the fields of angular function, length, area, volume, mass, density, pressure, time, speed, and energy. Additionally, it provides technology tables for hardness conversion, tolerances & fit, speed & peak life, stock data, ISO metric thread, hex bolt nut, and more.

One of the highlights of the app is its supplementary documents and videos, which provide useful additional material and notes for metalworkers. The app is an excellent tool for metalworkers who need quick access to important information and calculations while on the job.

Overall, Formeln & Tabellen Metall is a well-designed and easy-to-use app that is a must-have for metalworkers who want to work efficiently and accurately.