This Atlas Hardcase can also be used to protect the Blue ESR and Ring Testers.This case is tough with space for accessories too, this case will protect your instrument wherever you go. It's finished with high quality stitching and an embossed Peak logo. Complete with removable fabric carry strap (150mm length). External dimensions are 150mm x 120mm x 40mm. We do not recommend that you fit two instruments in this case (it's a bit tight and the 'on' buttons can get pressed)