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A tower viewer is a telescope or binoculars permanently mounted on a stalk. The device magnifies objects seen through its lenses, allowing users to see farther and more clearly than they could with the naked eye or with less powerful viewing devices. Tower viewers are typically metallic and most swivel horizontally and vertically (within given axes of rotation) to permit a range of view. The viewing machines are commonly placed in tourist destinations and scenic lookouts for the purpose of viewing attractions and events of interest; they are also used in residential, business, recreational and government locations for the purposes of surveillance and safety monitoring. ==Alternative names== Tower viewers are known by a variety of names, including: * coin(-operated) binoculars, coin(-operated) telescope, coin(-operated) scope, coin(-operated) viewer * donation viewer * free use viewer * observation binoculars, observation telescope, observation viewer * optical ranger, optical sight * outdoor viewer * non-coin(-operated) binoculars, non-coin(-operated) telescope, non-coin(-operated) scope, non-coin(-operated) viewer * Pinnacle Scope * revenue binoculars, revenue telescope * scenic magnifier, scenic telescope, scenic viewer * spyglass viewer, spyglasses * stationary binoculars, stationary telescope * tower binoculars, tower scope, tower telescope * view master, viewfinder, viewer, viewing scope, viewing machine, viewing stand, viewing telescope 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tower viewer」の詳細全文を読む スポンサード リンク
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