Get into contact with the Dutch Circle

Do you have a slide rule you would like to know more about?
Mail the Circle: @

Anybody who is interested in collecting slide rules, or other calculating instruments, and wants to share these activities, is very welcome as member of the Dutch Circle.

The yearly contribution is € 15.-

You really do not have to be a member yet, before starting a conversation about our slide rule collecting hobby: any question or issue that you raise will be very welcome.