WILD HEERBRUGG AGGoniometer Eyepiece Ocular 15x GK
for all Microscopes with 23mm tube diameter
Goniometer Okular 15x GK für alle Mikroskope mit 23mm Tubusöffnung
15x magnification / 15x Vergrösserung
G stands for Goniometer (for angle measurements) / G steht für Gonio (Winkelmessung)
K stands for Compensating eyepieces / K steht für Kompens Okular
with two graticules / reticles for measuring angles and also length (see photos)
mit zwei Strichplatten zum Messen von Winkel und Längen (siehe Photos)
Out of a brochure:
The goniometer eyepiece (15x compensated eyepiece) is used for angular measurements.
Instead of a micrometer, the glas plate behind the collector lens carries a circle, divided into 360°.
The eyelens mount can be turned, whereas the one of the collector lens can be fixed at given rotation angles by means of a clamping screw on the tube. When turning the eyelens, a reticle cross in the field of view rotates over the fixed scale of angles. Reading is to one half of a degree, while fifths can still be estimated.
The diagonal scale is divied from 1 to 100 over the field of view.