I have a pr. of wing dividers made by Wm. Johnson Mfg. of Newark, New 
Jersey which is in need of a thumb screw to secure the setting. I tried 
all of my loose odds and found nothing that fit. The local Bolt Supply 
House agreed that an 8-32 almost fits, but jams up quite quickly, and 
suggested it may be an 8-28 which is not available here due to lack of 
demand. ;-(

The sales person suggested that even though it is an American tool, that 
it may be a British standard threading. Can anyone shed light or point 
me to a supply house, or maybe spare an extra? It's a decent tool, with 
a fine adjustment screw, and I'd like to put it to use.

Don

-- 
"You can tell a man that boozes by the company he chooses"
The Famous Pig Song, Clarke Van Ness