12毫米增量式编码器 12 mm Incremental Encoder
旋转 机械 12 正交（增量） 垂直
得捷:
ROTARY ENCODER MECHANICAL 12PPR
Allied Electronics:
PEC11R-4220K-S0012
安富利:
PEC11R Series 12 mm Incremental Encoder with Push Momentary Switch 60 RPM 24 Detents 12 Pulses per 360° Rotation Tray