As of January 1st 2018 the Standard Test Piece (STP) will not be avaliable and replaced with the Exposed Wire Standard Test Piece (EWSTP)
X-Ray Test Pieces are a key part of Elder Engineering, what started as supplying the combined test piece, which led to the Standard Test Piece.
Elder are pleased to offer a wide range, with a new recent addition of the Scanner Trays which compliment the X-Ray Test Pieces.