All have been bought up over the years, and the quality has gone down!
Balfor has of course been bought out, Burr-Patterson and Ault has also been purchased and now, it is down to I beleive Herf-Jones in Providence, R I.
I cannot remember all of the Pin Companys, but the quality has gone down and the price has gone up!
Of course The GLOs make a % but I am not sure how much, maybe you can help me out with this?