On 07.05.14 00:12, Gene Heskett wrote: > On closer inspection, this level was made by the Union Tool people. > Anybody recall any other details about it?
The vial in a machine level has a longitudinal barrel curvature of metres - its sensitivity is much much higher than a carpenter's level. At 0.02mm/m, one division is one part per 50 million. Mine reads +/- 8 of those, so full scale is probably less than you can detect with a carpenter's level. > I look at it like my Bailey #7 jointer plane, awful rusty when I laid eyes > on it the first time at a flea market, but I almost broke the guys hand > putting the $20 bill in it he wanted for it. Cleaned up, sharpened up, it > sings to you when you use it, and makes straighter butt joints than a $350 > Delta 6" jointer. I've seen them advertised by those who deal in old > tools, always north of a $100 bill. Sometimes pushing for $200. The latter price should cover a decent Chinese machine level from a reputable retailer. (Which do you need most? ;) Mind you, you _can_ make one yourself, by honing out a glass vial to an internal barrel shape, i.e. bigger in the middle. You just need a continuous arc with a suitable radius for workable sensitivity. (Model Engineering Workshop described that method in issue 33, and a bent vial version in issue 36. Issue 77 described another. Erik -- 355/113 -- Not the famous irrational number Pi, but an incredible simulation! ------------------------------------------------------------------------------ Is your legacy SCM system holding you back? Join Perforce May 7 to find out: • 3 signs your SCM is hindering your productivity • Requirements for releasing software faster • Expert tips and advice for migrating your SCM now http://p.sf.net/sfu/perforce _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
