Tintype: Four Salesmen? Holding yardsticks.
This tintype is a bit confusing. You can see the men are holding yardsticks. Unfortunately the lettering on the vertical yardstick is too muddled to read. My guess is salesmen in a wholesale hardware store selling wall paper?
On a whole the men look to be sober workers with the exception of the gent on the back right. A few too many trips to the local saloon for lunch?