for correspondence [1]
finger tip 
Rubber sheath to cover the finger; it is used mainly to turn pages more easily or to sort papers or banknotes more quickly.
dater 
Device consisting of movable strips embossed with a series of digits and letters; it is used to print the date.
numbering machine 
Device consisting of movable strips embossed with a series of digits; it is used to print numbers.
stamp rack 
Rack used to hold such items as rubber stamps for dating and numbering.
telephone index 
Book in which frequently used names, addresses and telephone numbers are written and stored in alphabetical order.
rubber stamp 
Device consisting of an embossed rubber strip that is inked to print a stamp on an object or document.
stamp pad 
Ink-saturated pad on which a rubber stamp is moistened prior to stamping.
rotary file 
Device with a set of files that rotate on a spindle for easy consultation.
moistener 
Device used to moisten postage stamps and labels.
letter opener 
Small knife used to open envelopes and cut sheets of paper.