A feeler gauge is a tool used to measure gap widths. A taper feeler gauge is a feeler gauge of tapered, as opposed to parallel, shape. Feeler gauges are mostly used in engineering to measure the clearance between two parts. Typically, the clearance must be readjusted each with a feeler gauge. A hacksaw blade is commonly used as a feeler. It involves a metal detector, prodding instrument and tripwire feeler. The B-52 Stratofortress also had spoilers augmenting small ailerons, known as "feeler ailerons". The specific epithet ("tentaculata") is a Latin word meaning a "feeler" or "holdfast". With the growler energized, the feeler is moved from slot to slot. Listed below are the original "Feeler" songs. Feeler is the second studio album by Australian singer-songwriter Pete Murray. He is the founder of the Perrot Feeler Racing, dedicated to different categories of dragsters. Feeler is the third studio album by British-based American musician Marcella Detroit. Their 1998 album "Feeler" blended Tilley's vocals with electronic rock rhythms. With this support, "Feeler" entered the ARIA top 50 album charts in 2003.