Genghis the Engineer
Many thanks for the information -- you're a star !
It is indeed the item you suggest, with the exception that the "sleeve" is brass on mine, as opposed to black (plastic?) on the one you refer to.
Otis King manual duly downloaded from
www.sliderule.ca/manual.htm ! YEY !
PS -- Don't think you're sad at all ! Some of these slide rules are very lovely items !
