Quote Originally Posted by hmangphilly View Post
Got this off a bagnall and kirkwood listing



Model Outer (mm) Inner (mm) Thickness (mm) No. Coils (mm) Length (mm)

No. 12 18.9 12.6 2.9 36 295
Not sure where you got those figures from but the other Titan listings says different as well as the Bagnall and Kirkwood site.

http://bagnallandkirkwood.co.uk/prod...un-mainsprings



Pete