| ReturnTo Theme-Group-Choice | Onelevelup |
| 2F074 | Details of measuring devices | |
| G01D11/00 -13/28 | ||
| G01D11/28;13/28 | AA | AA00 OBJECTIVE |
AA01 | AA02 | AA04 | AA06 | AA08 | AA10 | ||||
| . Face plates or scale plates | . . Use of light transmission plates | . Indicator hands or needles | . Clocks | . Integrated meters | . Others | |||||||
| BB | BB00 KINDS OF LIGHT SOURCES |
BB01 | BB02 | BB03 | BB04 | BB06 | BB07 | BB08 | BB10 | |||
| . Light bulbs | . Electric discharge lamps | . . Fluorescent lamps | . . Ultraviolet lamps | . Light-emitting diodes (LED) | . Electroluminescent lamps (EL) | . Lasers | . Others | |||||
| CC | CC00 MOUNTING OF LIGHT SOURCES |
CC01 | CC02 | CC03 | CC05 | |||||||
| . Lamp housings | . . Mounting of lamps | . . Mounting of lamp sockets | . . Mounting of lenses | |||||||||
| DD | DD00 LOCATIONS OF THE LIGHT SOURCE |
DD01 | DD02 | DD03 | DD04 | |||||||
| . Front of the object | . Side of the object | . Rear of the object | . Above the object | |||||||||
| EE | EE00 INCOMING DIRECTION OF LIGHT RAYS |
EE01 | EE02 | EE03 | ||||||||
| . Front of the object | . Side of the object | . Rear of the object | ||||||||||
| FF | FF00 OPTICAL GUIDE MATERIALS |
FF01 | FF02 | FF04 | FF10 | |||||||
| . Plates, bars, or blocks | . . Roughened materials for irregular reflection | . Fibers | . Others | |||||||||
| GG | GG00 LIGHT ADJUSTMENT |
GG01 | GG02 | GG03 | GG04 | GG05 | GG06 | GG07 | GG08 | GG09 | GG10 | |
| . Light-adjustment plates | . . Optical-shielding plates | . . Color filters | . . Polarizing plates | . . Louvers | . . Reflectors | . Electrical means | . . Color | . . Brightness | . Others |