What is the Topcon GTS-4 Lower plate clamp for? I have a Topcon GTS-4 that has upper and lower plate clamps, but only an upper plate tangent screw. Claude couldn't find any use for the lower plate clamp, and the only mention of it in the ...

What is the Topcon GTS-4 Lower plate clamp for? #Topcon #GTS4 #Surveying #SurveyEquipment #Geomatics