US Digital® encoders,encoder,inclinometer,inclinometers,opitcal inclinometer,absolute inclinometer,incremental inclinometer,optical encoder,absolute encoder,incremental encoder,quadrature encoder,optical inclinometers,absolute inclinometers,incremental inclinometers US Digital� designs and manufactures optical encoders, inclinometers & motion control components. Our complete product line includes either absolute or incremental optical encoder & inclinometer products, stepper motors, PC interfaces, and digital readout