Thursday, January 12, 2017

PERFORATION

13.01.2017

PERFORATION

A series of holes between stamps in the sheet to facilitate easy separation is  called perforation.

Types include -  Comb, Intermediate,  Line, Mixed, Rotary, Rough, Sewing Machine, Unususal, Elliptical, Oval, etc.

Varieties can be Mixed, rough, Compound,  etc

Errors include missing perf, Interrupted, Irregular,

A perforation gauge is used to measure perforation. Perf 10 means 10 holes in the space of 2 cms

For modern day odd perfs - Can it be measured ?

Happy Collecting!!








 







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