#circular slide rules

[slack-wise]

Harris-Intertype Fototronic from Tangible Media Collection.

[slack-wise]

[slack-wise]

Hey!

Do you own a circular slide rule, or know someone who does? Maybe you have a box in the attic or a whole drawer of them.

I am working on an artist's book with one chapter dedicated to circular slide rules.

If you would like to help me out and get a credit in a really cool book then please scan your slide rule(s) and submit via the form on my site or you can email me [email protected].

Details and submissions at this link https://slackwise.org.uk/submit

Thank you!

[slack-wise]

Smith chart