Help!!
I have three adaptors from 1, 2, 3MT to 40 INT which have the name "Bristol Erickson Ltd" scribed around them However, I don't have a drawbar for them. I have failed to find what thread they are to make a new one - BSF, BSW, UNC (both) have been tried without sucess!
CAn anyone help with thread identification! It would appear to be about 5/8" and BSW goes in for a couple of threads and then binds.
Any help gratefully received.
Thanks
Andy