a measuring device for creating prescription eyeglasses including a rigid eyeglasses template and a rhinometer . the template is made of a face part including two rims that are spaced apart and connected by a bridge . an earpiece is rigidly and removably attached to each side of the face part . the face part of the template is provided with a lining - up means that is precisely positioned on the outer surface of the face part . the rhinometer comprises two parts that are slidable against each other , each part having flanges comprising an angled edge . the angled edges of the flanges of one of the parts slant in an opposite manner to the flanges of the other part , each flange of one of said parts forming a pair of flanges with a flange of the other part , the spacing of said pair being variable so as to form a measuring device .