The DM-13B Differential Micrometer offers sub-micron resolution in a unique design that achieves long range and fine adjustability in a single micrometer. The DM-13B has a 13 mm overall range with 0.2 mm fine adjustment range and is supplied with a micrometer mounting bracket compatible with M-462 Series stages. Note that the micrometer mounting bracket(s) supplied with the 462-series stages are sized for 1.0-in. (25 mm) travel. Therefore, the DM-13B includes a different micrometer mounting bracket which accounts for the shorter 0.5-in (13-mm) range, allowing symmetric travel about the 462’s nominal position. It employs the same mounting bezel as our standard SM Series Micrometers, so it may be used to easily upgrade an existing instrument to provide, in most cases, a factor of 10 improvement in resolution. In effect, we have built a differential micrometer outside of a standard micrometer - a simple concept that is difficult to implement. The motion it provides is exceptionally smooth and crisp, without tightness or difficult turning. The DM-13B provides excellent linearity and absolute accuracy better than 1%, and its unique design exhibits no harmonic motion errors typical of conventional differential screws.

DM-13B差动千分尺提供亚微米的分辨率，独特的设计，在一个单一的千分尺，实现了长期和良好的可调性。DM-13B具有13毫米的整体范围和0.2毫米的微调范围，并配有一个与M-462系列级兼容的千分尺安装支架。请注意，与462系列级一起提供的千分尺安装支架的尺寸为1.0英寸。(25毫米)旅行。因此，DM-13B包括一个不同的千分尺安装支架，它可以缩短0.5英寸(13毫米)的范围，允许对称移动约462的公称位置。它采用与我们的标准SM系列测微仪相同的安装边框，因此，它可以很容易地升级现有的仪器，在大多数情况下，提高分辨率10倍。实际上，我们已经在标准千分尺之外构建了一个差动千分尺——这是一个很难实现的简单概念。它提供的运动是非常光滑和干脆，没有紧密或困难的转弯。DM-13B提供了良好的线性度和超过1%的绝对精度，其独特的设计没有表现出传统差动螺钉典型的谐波运动误差。