I have no connection to the listings below.
There are a couple of nice Weston high quality ammeters available on eBay that would make very nice meters for a homemade HCCT. They are about 5 inches square so they are easy to read. One has a 0 - 2.0 Amp scale and the other has a 0 - 2.5 Amp scale.
Happy New year.
I see the 2.0 Amp one sold. If it was a forum 'feller, post a picture of the resulting HCCT
Bob thanks for the tip! I am going to work on my hcct this winter. Have a ruxel to finish first.