Precision linear scale

for linear encoders

Optical scales are a type of linear encoder. Explained in the simplest terms, an optical scale is a graduated strip, on which measurement marks are set with an extreme level of precision at definite intervals. While operating, an optical scanner slides along this strip and registers the number of marks it passes; this data is used, through a simple automatic calculation, to obtain an exact measurement of the movement made by the scanner itself – for example to verify the actual length of a finished piece. In the field of measuring and machine tools in general, optical scales are one of the most important elements in defining how good a measurement system is. The precision they are built with determines – together with the precision in setting the distance marks engraved on the strips themselves – the correct operation of a measuring machine, and thus its capacity to correctly evaluate linear translation of mobile parts and thus lengths of measured objects. F.lli Rotondi’s optical scales can satify the most stringent precision requirements and attain the highest levels of reliability. We offer both glass and steel optical scales, depending on the specifications of the machine they will be installed on – whether a milling machine, a measuring machine, or a lathe. The following tables summarize the main specifications of F.lli Rotondi’s chrome-plated glass and stainless steel optical scales: all such specifications can be altered and customized to obtain the perfect optical scale for your actual needs.