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Current hierarchy for electrical devices (815)
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electrical devices (815) electrical devices (815) exclude
  distance registers (1) electrical devices (815) -> distance registers (1)  
  electric arc lamps (16) electrical devices (815) -> electric arc lamps (16)  
  electric batteries (10) electrical devices (815) -> electric batteries (10) exclude
    battery charging devices (4) electrical devices (815) -> electric batteries (10) -> battery charging devices (4)  
  electric distribution systems (14) electrical devices (815) -> electric distribution systems (14)  
  electric generators (27) electrical devices (815) -> electric generators (27)  
  electric meters (1) electrical devices (815) -> electric meters (1)  
  electric motors (664) electrical devices (815) -> electric motors (664) exclude
    AC motors (33) electrical devices (815) -> electric motors (664) -> AC motors (33)  
    DC motors (17) electrical devices (815) -> electric motors (664) -> DC motors (17)  
    centrifugal motor switches (14) electrical devices (815) -> electric motors (664) -> centrifugal motor switches (14)  
    electric motor making (17) electrical devices (815) -> electric motors (664) -> electric motor making (17)  
    electrical insulation (1) electrical devices (815) -> electric motors (664) -> electrical insulation (1)  
    gear motors (7) electrical devices (815) -> electric motors (664) -> gear motors (7)  
    induction motors (138) electrical devices (815) -> electric motors (664) -> induction motors (138) exclude
      capacitor start induction motors (2) electrical devices (815) -> electric motors (664) -> induction motors (138) -> capacitor start induction motors (2)  
      repulsion start induction run motors (54) electrical devices (815) -> electric motors (664) -> induction motors (138) -> repulsion start induction run motors (54)  
      shaded pole induction motors (4) electrical devices (815) -> electric motors (664) -> induction motors (138) -> shaded pole induction motors (4)  
    motor armatures (19) electrical devices (815) -> electric motors (664) -> motor armatures (19)  
    motor bases (1) electrical devices (815) -> electric motors (664) -> motor bases (1)  
    motor bearings (19) electrical devices (815) -> electric motors (664) -> motor bearings (19)  
    motor brakes (4) electrical devices (815) -> electric motors (664) -> motor brakes (4)  
    motor brush holders (18) electrical devices (815) -> electric motors (664) -> motor brush holders (18)  
    motor brushes (5) electrical devices (815) -> electric motors (664) -> motor brushes (5) exclude
      brush reseating tools (1) electrical devices (815) -> electric motors (664) -> motor brushes (5) -> brush reseating tools (1)  
    motor commutators (7) electrical devices (815) -> electric motors (664) -> motor commutators (7)  
    motor controls (43) electrical devices (815) -> electric motors (664) -> motor controls (43)  
    motor cooling (26) electrical devices (815) -> electric motors (664) -> motor cooling (26)  
    motor housings (7) electrical devices (815) -> electric motors (664) -> motor housings (7)  
    motor mounts (19) electrical devices (815) -> electric motors (664) -> motor mounts (19)  
    motor regulators (13) electrical devices (815) -> electric motors (664) -> motor regulators (13)  
    motor stators (8) electrical devices (815) -> electric motors (664) -> motor stators (8)  
    motor windings (13) electrical devices (815) -> electric motors (664) -> motor windings (13)  
    reciprocating or vibrating electric motors (27) electrical devices (815) -> electric motors (664) -> reciprocating or vibrating electric motors (27)  
    repulsion motors (1) electrical devices (815) -> electric motors (664) -> repulsion motors (1)  
    synchronous motors (6) electrical devices (815) -> electric motors (664) -> synchronous motors (6)  
    universal motors (2) electrical devices (815) -> electric motors (664) -> universal motors (2)  
  electric switches (35) electrical devices (815) -> electric switches (35)  
  electrical connectors (1) electrical devices (815) -> electrical connectors (1)  
  electrical fuses (1) electrical devices (815) -> electrical fuses (1)  
  magnetic transducers (2) electrical devices (815) -> magnetic transducers (2)  
  phase regulators (1) electrical devices (815) -> phase regulators (1)  
  rectifiers (1) electrical devices (815) -> rectifiers (1)  
  telegraphic apparatus (1) electrical devices (815) -> telegraphic apparatus (1)  
 
Full Hierarchy | agricultural machines (1,826) | agricultural tools (259) | armaments (86) | combination tools (581) | construction machines (63) | electrical devices (815) | gauges (31)
hardware (14) | household machines (496) | household tools (816) | household (408) | industrial furnaces (34) | industrial machines (865) | industrial tanks (1) | industrial tools (473)
knives and cutters (128) | layout tools (2,476) | manufacturing (56) | metalworking machines (7,214) | metalworking tools (854) | musical instruments (5) | pliers (698) | potters tools (3)
propulsion and energy (3,683) | punches (44) | rules (426) | screwdrivers (475) | specialty machines (1,421) | specialty tools (849) | stoneworking machines (57) | stoneworking (1)
structures (85) | tool handles (89) | tool holders (71) | tool making (342) | tool storage (51) | trade specific (5,166) | transportation machines (379) | transportation tools (35)
water distribution systems (144) | woodworking machines (15,016) | woodworking tools (3,859) | work holding (1,203) | wrenches (5,739)

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