I know that Hacker Mfg. was acquired by Vandercook, but this gauge appears to pre-date that merger. Does anyone have any information on Hacker gauges from this era?
This particular gauge has two standards (.159 and a .759) which add up to type-high. I would guess it was to be used for checking planed blocks for mounting plates as well as .159 plates which have already been mounted. Does that make sense?
I am in the process of cleaning this thing up and think it should be useful for makeready for my poster size mounted linocuts which have proven to be too large to check on my smaller Vandercook type-high gauge.