A method for manufacturing polysilicon layer is provided. The first layer includes a transparent portion and a scale representing angles located proximate to the transparent portion. An aspirator tip is coupled to the aspirator body member at an end of the fluid passageway and having a fluid passageway therein extending from the end of the fluid passageway of the aspirator body member when coupled to the aspirator body member, the aspirator tip being coupled to the first and second optical conductors and comprising an optically transmissive material. The selected access plan is selected according to an estimated ability to complete the query prior to the deadline. The relationships XC<XA and XC<XB are satisfied at areas 107 and 109.