that (external) Weston is too much old and out of spec, but useful for comparements. 8300A have no Weston inside.
I have more then one of them. A Weston what is allready will deliver 1,0865V @ 20°C
the comparement here was the 8500A what you see on the picture, they are parallel.
Hello Bill,
you can fix the buttons with glue, the board can be removed without removing the buttons, so they can be fixed.