Available in linear and rotary scale versions, TONiC works at speeds to 10 m/sec and temperatures up to 70°C, while providing resolution to 5 nm. High signal-to-noise ratio combined with dynamic signal processing ensures subdivisional-error of less than ±30 nm. Encoder also reads gold scale featuring auto-phase In-Trac optical reference mark, which provides bidirectionally repeatable index over entire speed and temperature range.