b's aFetys HieLdsxtenSometerS hieldS afetyOptional safety shields are available for all motorized test frames. On FMS, MMS, FMD, and MMD models safety shields include an interlock, prevent tests from being run when the shield is open. All shields are constructed with aluminum frames and shatter-resistant aerospace acrylic.Safety ShieldsModel No. Description InterlocksFMM-S-SHIELD FMM Safety Shield Short No & eS SFMM-SHIELD FMM Safety Shield Standard NoFMM-X-SHIELD FMM Safety Shield Extended NoFMS-1000 SHIELD Safety Shield FMS-1000 YesFMS-2500 SHIELD Safety Shield for FMS-2500 & FMS-5000 YesMMD-SHIELD Safety Shield for MMD & FMD Test Frames YesMMD Shield FMS Shielde xtensoMetryStarrett offers a full range of contact-type extensometers. Our systems areFMM Shieldcompatible with Reliant Technologies and Epsilon extensometers and feature automatic identification of model and measuring range.Starrett MMS and MMD material test frames may be used with extensometers. Starrett L3 systems may use extensometers from Reliant Technologies and Epsilon Technology Corporation.Extensometers are customized so that they are automatically recognized by the L3 system.Selecting the Extensometer symbol will display key characteristics of the instrument including measuring range.180'