MECHANIC TRADES 
N= 
1010 
CR 
alums 
s 730 
681.117 
I 
3 
~y 
3 
L 
7 
h] 
IZT 
2 
104 
13 
I31 
122 
I32 
134 
vI35 
Ia 
142 
[43 
144 
I45% 
Curiosities of clockmaking 
Mysterious clocks 
“ watches 
Automaton clocks 
Time reckoners 
Chronografs and other apparatus for mesuring time 
Reckoners by seconds or fractions of seconds 
Stop watches 
Tower reckoners 
Metronomes 
Chronografic reckoners Mesurers of velocity 
Reckoners of interruption 
Alarm reckoners , 
Time clocks 
Other horology apparatus 
Portable sundials 
Hour glasses 
Reckoners of consumption 
Water meters 
Gas “ 
Vehicle reckoners Taximeters 
Automatic distributers or producers of various effects 
Distributers of objects prepared in advance 
Distributers of objects transformd by the apparatus 
itself 
Apparatus for printing metal labels 
Apparatus for producing images and fotografs Pro- 
jection lanterns 
Moving picture apparatus 
Sound producers Automatic fonografs 
See also 681.8432 Fonografs; construction 
Calculating, counting and registering machines 
Tho not all wheel machines, there may under this hed be brought together 
calculating machines of all types. Manufacture of these machines may be 
clast here or under numbers indicating their use 
Arithmetic machines Adding machines Arith- 
mometers 
See also in offis economy 651.2641 
Machines for solving equations 
See also Equations in Relativ index 
Logarithmic instruments 
Calculativ rulers and circles. See also Mathematics 510.8 
Abacus and apparatus for grafic tables 
See also Arithmetic 511.2 and Offis economy 651.2645 
Machines for money counting Automatic safes