Open Roos Column Clamp either way and it fits the column!
By: the H. W. Roos Company
Publisher: H. W. Roos Company
Published: 1927
Place of publication: Cincinnati, Ohio
Language: eng
Subjects: Catalogs; Shoring and underpinning; Clamps (Engineering); H. W. Roos Company
Other titles: You can't open it wrong
Notes: Cover title

Issued as folded mailer

Avery Classics copy: With stamp of Edward J. Cooper