Ash & Co. Lathe Chuck

[opsoff1]

Anyone have info on these? I have 3 jaw / 6-1/4" unit on my SB 10L. Just finished cleaning/lubing - got to wondering about it and I can't seem to find anything on them. Made in England. Reversible jaws. "Seems" to be fairing decent. I have to check it for runout tonight after reassembly.
TIA if anyone has any data.

 

[benmychree]

I seem to remember a sales organization; Berg & Ash that sold machine tooling.

 

[opsoff1]

Further digging seems to point to Pratt Burnerd rebranded chucks for Ash & Co who were tooling retailers in I believe WI a few years back.
Seems to be fairly decent. Checking it for TIR with various diameters of stock - I get between .0008" and .0015" pretty consistently. Worst case was .002".