This invention relates to a measuring instrument for glasses, comprising a main frame having two rims, each of the two rims having a top rim, a side rime and a bottom rim, wherein a gear bar is extended from the top rim； a gear assembly disposed between the two rims and having a first gear meshing to the gear bar, a second gear and a gear-fixing plate coaxial coupling to the first gear； a nose pad regulating assembly comprising a nose pad-fixing plate disposed between the two rims and connected to the gear-fixing plate, and a nose pad holder connected to the nose pad-fixing plate and having two legs extended therefrom, wherein each of the two legs has a longitudinal leg and a horizontal leg connected to the longitudinal leg and the bottom rim of each of the rims； a front fixing plate and a back fixing plate respectively disposed at a front side and a back side of the main frame to clamp the gear-fixing plate and the nose pad-fixing plate； and two temples, each having a first temple and a second temple, wherein the first temple is connected to the rim at one end thereof and connected to the second temple at another end thereof.本案關於一種配鏡測量儀器，包含鏡框主體，設有二鏡框，每鏡框包含上框、側框與底框，上框延伸一齒條；一齒輪組設於二鏡框間，包含第一齒輪嚙合於齒條，第二齒輪與齒輪固定板同軸耦接於第一齒輪；鼻墊調整機構包含一鼻墊架固定板設於二鏡框間並連接齒輪固定板，一鼻墊架連接於鼻墊架固定板且延伸二支腳，每支腳具有直向支腳並連接橫向支腳，橫向支腳連接鏡框之下框；前固定板與後固定板設置於鏡框主體前、後側，並夾設齒輪固定板與鼻墊架固定板；二鏡腳，每鏡腳包含第一鏡腳與第二鏡腳，第一鏡腳一端連接於鏡框，另一端連接第二鏡腳。
