The search returned 2 articles:

  1. May 2015: Project: Balanced Input Attenuator For Audio Analysers & Scopes by Jim Rowe, PCBs: 04105151/2/3 [print issue] [online issue]
  2. May 2015: Project: Balanced Input Attenuator For Audio Analysers & Scopes by Jim Rowe, PCBs: 04105151/2/3, 7 shop items [print issue] [online issue]