https://cedadinglue.en.made-in-china.com/product/EAWUVsYKgacv/China-01171283-Bf12L513-Engine-Rotational-Speed-Sensor-for-Girder-Conveyor-in-Mining-and-Wells-Agricultural-Machinery.html
01171283 Bf12L513 Engine Rotational Speed Sensor for Girder Conveyor in Mining and Wells...
01171283 Bf12L513 Engine Rotational Speed Sensor for Girder Conveyor in Mining and Wells Agricultural Machinery, Find Details and Price about Rotational Speed...
rotational speed sensor
https://pubchem.ncbi.nlm.nih.gov/patent/EP-0357870-B1
Unitary rotational speed sensor - Patent EP-0357870-B1 - PubChem
EP-0357870-B1 chemical patent summary.
rotational speed sensorunitarypatenteppubchem