If you’ve ever done construction work (particularly framing obviously) you tend to realize it very quickly, but you get quite used to dealing with it; it’s all

If you’ve ever done construction work (particularly framing obviously) you tend to realize it very quickly, but you get quite used to dealing with it; it’s all quite standardized, simple carpentry. A lot of batteries like 18650’s or CR2032’s as examples are basically just their size in millimeters, and as far as I know, they are accurate.