200 line-pairs/mm equates to line width of 2.5µ
RONCHI RULING, 200LP/MM - R28
Adding to their comprehensive range of Ronchi rulings Pyser have just introduced the R28 with line widths down to 2.5 microns.
This 200 line-pairs per mm all glass slide can be used with microscope or camera systems to check for resolution and distortion, and is supplied in a polished wood case for extra protection.
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