Standard Test Piece in millimeters to comply with EU-regulations.
Millimeters for single wire resolution and usefull penetration with simple penetration from 14 up to 30mm.
EW STP MM 14-30
Standard Test Piece and Exposed Wire STP with wire resolution in millimeters and with simple penetration test from 14mm up to 30mm is designed to comply with ECAC and EUrequirements.
