I am seeking advice for the dimensions of a board for the Zkit#1. I thought I saw a suggestion at one time and have been looking around the forum again and cannot find any information. Essentially the an appropriate range HxLxW to attach the board, transformers and an IEC socket so I can get rolling.This is my experimental unit.

Second question set is: In the preflight check in the instructions, I am a bit lost in the on where to place the multimeter contacts for A, B and C. I only see one contact point. I assume I am missing an obvious point. Thanks