An altimeter is a device which gives audible signals and shows the height above the ground.
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Global Positioning System (GPS) is a necessary equipment used by pilots to mark the flight path at the time of flying and can also be used to analyze flying technique at the time of training.
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Hot air Balloon
It is a “lighter than air” aircraft which consists of a nylon bag/envelope containing heated air. A wicker basket, also known as gondola is attached to the balloon which carries passengers, propane fuel tanks and an open flame.
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It is a device which indicates the climb rate (or sink rate) with audio signals (beeps) or a visual display and helps the pilot to find and stay in the core of a thermal.