Purchase decisions checked against the sources

Free tools that check compatibility and purchase choices against official manufacturer data. The verdict never depends on sellers.

Discover the tools

Choose your market

Illustration: a verification seal at the centre linked to three cards showing a ruler, a data sheet with a date and a compatibility check.

Tools

Why you can rely on it

  • Data from the manufacturers

    Sizes and rules come from official data sheets, each with its source and reading date.

  • Verdict independent of offers

    Offers, when shown, are separate and labelled; they never change the result.

  • Affiliate links declared

    Where a link can earn us a commission, we say so.