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...

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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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Beschreibung
Zusammenfassung:	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 distribution table is arranged on the inner circle of the index plate. The accurate positioning index head can be used for more accurately and directly displaying a reading result and students can more easily accept the teaching content in class.