The image shows a classic metal desk bell, often referred to as a service bell or call bell. Purpose: It's used to summon an attendant or signal for service in various settings like hotels, restaurants, offices, or even homes. Features: Typically made of metal (often chrome-finished), it produces a clear, loud ring when the button on top is pressed. Applications: Besides commercial use, it can be used in classrooms, for pet training, or as a fun way to signal needs at home.