Look this stuff up. I went through this when I got mine off Ebay. Ended up in a Japanese distributor (in Japanese of course) but found numbers. This is what I found works on mine. Not where I can see mine now. I also have a scribe without so much offset that I first bought, but doesn't work good. Can measure mine tomorrow if needed. Good Luck!! Charles
PS. Also included PDF's from original search. Might give you a starting point.
Vernier Gauge Parts
Mitutoyo Scriber #900258; Shars #303-4476 2.4”X1.2”X.25”X.5”
Mitutoyo Clamp #901385; Enco #712-1534
PS. Also included PDF's from original search. Might give you a starting point.
Vernier Gauge Parts
Mitutoyo Scriber #900258; Shars #303-4476 2.4”X1.2”X.25”X.5”
Mitutoyo Clamp #901385; Enco #712-1534