Cool tiny outside caliper, Rooster brand???

[454ragtop]

Found this little gem at the flea market this AM. Seems to have owners initials on 1 side and a rooster (?) stamped into the other side. Any ideas who may have made it? Anybody have any other machinist tools with this logo?

 

[Private Lugnutz]

No idea, haven't seen it before, but that is cool - both the caliper and the stamp.

 

[leg17]

Looks a lot like Bertram from Germany.
Like Hen and Rooster.
Like Boker, they made many various quality items besides knives.