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131Electronic tuner — Pocket sized Korg chromatic LCD tuner, with simulated analog indicator needle The term electronic tuner can refer to a number of different things, depending which discipline you wish to study. In the Discipline of radio frequency electronics an… …
132Buoyancy aid — Buoyancy aids are a specialist form of personal flotation device (PFD) used most commonly by kayakers and canoeists. They are designed as a flotation aid, rather than a life saving device and have several key differences to other PFD s and life… …
