There was a whole series of these in Model Engineer from circa the 1950s.
I'm not sure who the author was (does anybody know) but he/she really had a sense of humour, and new the Model Engineering crowd down to a tee! I have always liked the roundnosed smooger – I seem to be able to grind up those without planning to!
(Andysmachines should have put proper attribution, but, almost nobody seems to do that anymore!)
Another JohnS.
Edited By John Alexander Stewart on 11/03/2012 15:32:10