Mechanical Devices in Office

Mechanical Devices in Office
Just as modern production is now a days concentrated in a single unit on a large scale system, so alsao the modern office of a business tends to be correspondingly large.In order to deal efficienly with its system of copying correspondence and documents,as well as to issue circuller letters,etc.a modern office generally uses various mechanical devices to expedite work.Following are the devices :
01.Telephone 02.Type-writer 03.Dictaphone and Ediphone
Copying and Multiplying Process
01.Printing 02.Hectogram 03.Memiogram
04.Rotary Multiplier
05.Multigraph 06.Lithography and printing 07.Roneo Letter Copier 08.Photostate 09.Addressing Machine etc