DSM Armature Bar Alignment ToolDSM Armature Bar Tool Perfect armature bar alignment when replacing spring(s) and A bars! Vital tool to have for any Tattooist to avoid machine down time! Not to be mistaken with cheap Chinese tools, These are manufactured to extremely strict tolerances from a single piece of stainless steel here in Norwich, UK! This is made to fit industry standard armature bars and works with any length of spring and armature bar. Liner or Shader setups.