Full Idea
Anti-realists theories of measurement (like operationalism) cannot explain how we can use different methods to measure the same thing (e.g. lengths and distances in cosmology, geology, histology and atomic physics).
Clarification
'Histology' studies microscopic biological structures
Gist of Idea
Anti-realists can't explain different methods to measure distance
Source
Chris Swoyer (Properties [2000], 4.2)
Book Reference
'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.28
A Reaction
Swoyer says that the explanation is that measurement aims at objective properties, the same in each of these areas. Quite good.