Brown & Sharpe Inc. Offers Modular Probe Changer for Use in Conjunction. Brown & Sharpe Inc. Supplies coordinate measuring machines [CMMs], optical measuring systems, 1D, 2D and 3D benchtop measuring machines and precision hand tools. Modular Probe Changer for Use in Conjunction is a module changing rack that allows automatic changing of any magnetic stylus modules. Modular Probe Changer for Use in Conjunction is offered in several models with varying number of ports and heights. The probe changer is designed to securely hold the stored probe modules to protect them from airborne containments.