In exact or careful conformity to truth; free from failure, error, or defect; exact; which gives truthful information
(ux)
(RQ:Schuster Hepaticae V)
For more than 90% of the figures (mostly drawn during 1976-1990), either a scale, or the given magnification, will allow the user to derive accurate measurements, even when these are lacking in the diagnosis.
Deviating only slightly or within acceptable limits.