DECIMAL CLASSIFICATION 
681.62 Copying and printing presses 
621 Hand copying and printing presses 
Copying presses 
Printing 
Hand typografic presses 
01d wooden presses; iron presses 
Typografic presses with pedals 
Mekenical typografic presses 
For printing in black 
“  « colors 
Special presses for various kinds of printing 
For copper plate printing 
“ lithografic and zincografic printing 
“ fotografic printing 
“ chromografic “ 
“ printing wall paper 
“« fabrics 
See also 667.3 Calico printing 
Machines for stamping, numbering, dating, effacing 
For stamping and labeling 
Moist stamps; dry stamps. Composing sticks. Inkpads. Inkpad 
boxes 
Numbering machines and stamps 
Automatic numberers. Frame for numbering 
Dating machines 
Date stamps: movable, perpetual 
Effacing and perforating machines 
\pparatus for telecommunication 
Machines and apparatus for transmitting at a distance signals, writing or 
words 
See also in engineering 621.38 Electric communication; in communication 654 
Telegraf, cables, signals 
For short distance transmission of various acoustic or 
mekanical signals 
See also in engineering 621.386 Telefone instruments, in offis economy 
651.262 Oral communication 
By comprest air transmission 
See also in engineering 621.53 Comprest air transmission 
By comprest water transmission 
For fotografic transmission 
Machines for manual labor and involving instruments of 
precision 
Special machines may be clast under number for their use or may be brought 
together here and distinguisht by affixing after a colon the number for their use, 
as noted under 681.2: e. g. 681.7: 677.753 Manufacture of lace looms 
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