A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: John A Brown
Date: 2017 Nov 9, 16:39 -0800
For anyone interested in purchasing a brand new circular slide rule Concise Co. Ltd in Japan still make them. I recently purchased one and it is a real pleasure to use.
Model no 270N
Diameter 10 cm
Scales on the front A, D, C, CI, B, K, L and on the back DI, D, S, T1, T2, ST
It comes with a plastic sleeve and instructions in Japanese which are easy to follow. The cost is 2700 Japanese yen which for me was about $32 Australian plus postage of course.
They can be contacted through their website which can be found by putting "Concise Co.Ltd" into Google.
Adelaide, South Australia.