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2. Reach extender - Wikipedia

   en.wikipedia.org/wiki/Reach_extender

   A 36 in (910 mm) reach extender with a secondary trigger and a pole that can be rotated 90 degrees. A reach extender (or reacher, grabber arm, helping hand, trash picker, picker-upper, extended gripper, long arm gripper, extended reach grabber, grabber tool, litter picker, or caliper) is a handheld mechanical tool used to increase the range of a person's reach and grasp when grabbing objects.

3. Single coil guitar pickup - Wikipedia

   en.wikipedia.org/wiki/Single_coil_guitar_pickup

   The P-90 is a single coil pickup designed by the Gibson Guitar Corporation. [4] [5] These pickups have a large, flat coil with adjustable steel screws as pole pieces, and a pair of flat alnico bar magnets lying under the coil bobbin. The adjustable pole pieces pick up the magnetism from the magnets.

4. Magnetic cartridge - Wikipedia

   en.wikipedia.org/wiki/Magnetic_cartridge

   The first commercially successful type of electrical phonograph pickup was introduced in 1925. Although electromagnetic, its resemblance to later magnetic cartridges is remote: it employed a bulky horseshoe magnet and used the same single-use steel needles which had been standard since the first mechanical transfer disc record players appeared in the 1890s.

5. Pickup (music technology) - Wikipedia

   en.wikipedia.org/wiki/Pickup_(music_technology)

   A typical magnetic pickup is a transducer (specifically a variable reluctance sensor) that consists of one or more permanent magnets (usually alnico or ferrite) wrapped with a coil of several thousand turns of fine enameled copper coil. The magnet creates a magnetic field which is focused by the pickup's pole piece or pieces. [2]

6. P.A.F. (pickup) - Wikipedia

   en.wikipedia.org/wiki/PAF_(pickup)

   A P.A.F., or simply PAF ("Patent Applied For"), is an early model of the humbucker guitar pickup invented by Seth Lover in 1955, so named for the "Patent Applied For" decal placed on the baseplate of each pickup. [1] Gibson used the PAF on guitars from late 1956 until late 1962, long after the patent was granted. [1]

7. Magnetic switchable device - Wikipedia

   en.wikipedia.org/wiki/Magnetic_switchable_device

   A magnetic switchable device (often called a magnetic base) is a magnetic fixture that uses one or more permanent magnets in a configuration that allows the external field to be turned on or off. They are used in many applications including optics , metalworking , lifting , and robotics, to attach items to metal surfaces in a secure but ...