Model 901 (horizontal) and 902 (vertical) Biaxial Clinometers accurately measure angular position with the same performance as Model 900, but in a slim design for use in narrow spaces. These conveniently sized, low-cost units fit neatly into underwater pressure housings, well logging tools, drilling equipment and many other devices. The dual-axis (biaxial) Models 901 and 902 measure rotations about two orthogonal axes. Their high-level voltage outputs allow signals to be delivered over long cables.