Bialaddin 310

Not easy to be sure but I think the one on the right has a later pricker control, probably from a 320...

 

Hello David, Ian may have precise information about the weight difference, but Willis&Bates may have been using thinner brass by then, Jeff.

 

Yes, I thought that as well, Jeff, but 12 ounces is a lot. I'll be weighing 300 and 305 tanks when I get some time...

 

Having a small collection of tanks being prepped for sealing I thought I would try this myself, it will be interesting to see if we get similar results...

My precision scales are packed away somewhere so I had to use kitchen scales that only go up in 5g increments. But here were my results:

My two 300 tanks weighed 800 and 805 grams so probably somewhere between the two.

My 305 tank weighed 790 grams.

But perhaps the most interesting one because I assumed it was the same tank as the 305 just in a different colour is my bowlfire tank which only weighed 765 grams. However, even that is only a difference of 1.4 oz