Quote:
Originally Posted by DougAdams
What makes the Catseye better than a Cheshire?
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Catseye tools include cheshire and autocollimator. These are the main differences as i see them.
- The triangular centre spots precisely fit the illuminated ring of the cheshire. This greatly enhances accuracy.
- Being two inch format allows a much easier to use autocollimater as images can be seen much further off axis.
Nils Olof Carlin wrote a piece about autocollimaters and I read what he wrote to mean that the order of accuracy given by the autocollimator to be somewhat unneccessary for normal use. ie not worth the hassle (unless you are trying to get a perfect image onto a tiny chip like Mike
)