unknown clamp

[reedydrive]

Just discovered a peculiar clamp and don't know what it's for. I think it might be for motorcycle chain. Any ideas?

 

[Provincial]

Roller (Motorcycle) chain tensioner. Holds the ends of the chain the right distance apart to install the master link.

You were right!

 

[reedydrive]

Thank you, Provincial. One of these things has been floating around my house for 20 years...