??? Hi Dave, help me out here; what's a Curta Type I?

Erik

That's correct. It is a mechanical calculator that was used extensively in the sport prior to the advent electronic calculators. Some navigators still swear by them, and actually prefer them to electronic calculators.

Dave Paisley

would help if i gave you my email.

ruimprzd@rogers.com

Also does it come with case and instruction manual?

Thanks
Tony