Introductory notes for the Acta IMEKO Special Issue on the 24th IMEKO Technical Committee 4 International Symposium and the 22nd International Workshop on Analogue-to-Digital Conversion and Digital-to-Analogue Conversion Modelling and Testing

Measurement has always been a tool by which we can observe the world around us. This concept was once again confirmed during the 24th IMEKO Technical Committee 4 (TC4) International Symposium, which showed how topics related to the world of measurement range across many fields of knowledge. The IMEKO TC4 International Symposium is one of the most important events in the fields concerned with the theoretical and practical aspects of the measurement of electrical quantities and related instrumentation. It involves institutions and academia in a discussion of the state of the art and issues that require a joint approach by engineers, academics and other experts of measurement, instrumentation, testing and metrology