Accurate positioning index head

The utility model relates to an index head and particularly relates to an accurate positioning index head. The accurate positioning index head comprises an index plate and a pore ring, wherein the pore ring passes through and is distributed on the outer circle of the index plate, and a degree distri...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CAI YANQIN, XU JUN, ZHU GUILIN, GAO AXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PHYSICS PLANETARIA SEALS
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