With ±30 nm cyclic error, advanced filtering optics, resolution to 5 nm and simple installation, Renishaw's SiGNUM™ RSLM industrial encoder system offers the ease-of-use of tape scale, with fine pitch glass scale performance (better than ±4 µm accuracy), even at lengths up to 5 metres.

Renishaw’s SiGNUM™ range offers high speed, reliable, non-contact performance combined with advanced features including the IN-TRAC™ auto-phase optical reference mark and dynamic signal processing. A new addition to the range, the RSLM spar scale is available with multiple IN-TRAC™ optical reference marks regularly spaced for customer selection, or a single reference mark, either at the centre of the scale or close to the end. Dual optical limits provide easy-to-use end-of-travel indication.

Manufactured from a hard martensitic stainless steel, RSLM offers a low coefficient of thermal expansion (10.8 µm/m/°C), yet its special composition provides a high resistance to corrosion. Its robust design and a much smaller cross section than typical glass professional scales, removes the risk of breakage, yet it can be coiled for simple storage, behaving like a spar scale once uncoiled. System designers can choose between clip and clamp mounting, or manufacturers of adhesive tape with epoxy anchor point.