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Rotary calendar / calendar

Rotary calendar
Rotary calendar

Rotary calendar, internal hexagonal, each of the 6 face in the face there are two months of the calendar.
the internal calendar can be rotated by a rotating shaft.This position has a card slot, outside the baffle can move up and down through the card slot fixed baffle.Internal hexagonal structure

University

Chengdu university of technology Three road No. 1 Erxian Qiaodong

Chengdu university of technology Three road No. 1 Erxian Qiaodong
Chengdu, China