The apparatus may include a liquid sensor component moveably coupled to a cam member and a barrel device biased to move linearly responsive to {TAIL ~ rotatable movement} of {HEAD ~ the cam member} 
The apparatus may include a liquid sensor component moveably coupled to a cam member and a barrel device biased to move linearly responsive to { TAIL ~ rotatable movement } of { HEAD ~ the cam member }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD