The present invention concerns a wheel rim and a method for making a wheel rim of the type suited for use on an agricultural or construction vehicle. A window generating capability provides for optional enhancement of the video signal within a user-selectable range of video signal values. Drill cuttings, and other matter collected with the cuttings, are contained within a sieve basket and washed andor degreased in the bath while the sieve basket holding the collected drill cuttings and associated matter is shaken by the shaker frame. The spacer has an external length and a chamber formed along the external length, the chamber being adapted to improve ultrasound visibility relative to the spacer. Accordingly, the synthesis experiment automation system is capable of simultaneously performing a plurality of different experiments as complex as those usually performed by researchers, and, moreover, has a large number of possible experiment operations, and can easily be improved andor extended.