PROBLEM TO BE SOLVED: To provide an extend goniometer capable of extending a length of each shaft of the goniometer to an arbitrary length when necessary, simultaneously measuring an angle and a length, reducing a reading mistake of a scale or the like and having a material and a color tone allowed to be easily accepted also by children.SOLUTION: Since a basic shaft and a moving shaft with length scales can be extended/contracted by sliding a basic slide shaft 2 and a moving slide shaft 4, an arbitrary length can be also measured. Further a locking mechanism is attached to prevent each shaft from being pulled out. Lens parts 8 are attached to a moving body shaft 3 so as to observe enlarged angle scale and numerals of a protractor. By using an organic polymeric material as a material of the respective shafts and applying suitable coloring to the shafts, the material and the color tone may be easily accepted by children.COPYRIGHT: (C)2013,JPO&INPIT【課題】必要に応じてゴニオメータの各軸の長さを任意の長さに伸ばすことが出来、角度と長さの測定を同時に可能とするとともに、目盛等の誤読を減らし、小児にも受け入れ易い素材と色調とすることを提供する。【解決手段】長さの目盛をつけた基本軸および移動軸は、基本スライド軸2および移動スライド軸4のスライドにより伸縮可能となり任意の長さの測定も可能となった。さらに、ロック機構を設け、最大伸長時に抜けないように考慮した。移動本体軸3にはレンズ部8を設け分度器の角度目盛と数字が拡大して見えるようにした。各軸の素材は有機高分子材とするともに適切な着色を施すことにより素材も色調もとくに小児に受け入れ易いものとした。【選択図】図1
