- Joined
- Apr 8, 2021
- Messages
- 73
Beginners think having a gage answers all questions however this is not so, a Gage can not tell you much if worn surfaces are compared to each other as a datum is necessary. Now I use an optical datum but granite
parallels are useful, long straight edges are as well. For example the flat way on a lathe can be straightened
and used to check the tailstock flat way, then both of those used to check the prismatic ways.
Tight wire alignment for horizontal measurements will repeat to two tenths reliably or closer , the sag formula for wire alignment is posted on alignment web sites. . Wire alignment gave way to optics, then lasers.
parallels are useful, long straight edges are as well. For example the flat way on a lathe can be straightened
and used to check the tailstock flat way, then both of those used to check the prismatic ways.
Tight wire alignment for horizontal measurements will repeat to two tenths reliably or closer , the sag formula for wire alignment is posted on alignment web sites. . Wire alignment gave way to optics, then lasers.