The Talyrond 385 updates the Talyrond 290 with increased functionality and accuracy. New electronics and drive mechanisms provide complete CNC control of all axes to a precision suited to the most exacting of applications. To ensure both accuracy and repeatability the vertical column and radial arm of the instrument have high precision linear scales coupled with precision drives. Data point resolution and noise levels are similar to that more usually associated with surface finish instrumentation ensuring stable and repeatable measurement. At the heart of any roundness instrument is its spindle: the TR385 utilises a frictionless air bearing spindle manufactured on Taylor Hobson’s own precision diamond turning machine.