I know that I am late to the party I have heard of Post Versalog (I own both a full size and a half size, as well as a full size Post Triglog), Pickett, and K&E slide rules but I have never heard of an OBR slide rule,  !
MTD, Sr.
__________________
Mark T. DeNucci, Sr.
Go Youngstown (Ohio) State University Penguins!
Member:
Trumbull County (Warren, Ohio) Basketball Officials Association
Wood County (Bowling Green, Ohio) Basketball Officials Association
Ohio Association of Basketball Officials
International Association of Approved Basketball Officials
Wood County (Bowling Green, Ohio) Umpires Association
Ohio High School Athletic Association
Toledo, Ohio, United States of America
|