Replacement PartsOn Site and In Factory Calibration LSI Product Replacement Parts Replacement parts and support articles 300 Series Gage Replacement A list of available parts and service options for your 300 series spring gage. Battery & Power Supply Replacement A graphical guide to common parts and replacement procedures for Battery & Power Supply Replacement. Lynx / Panther Parts A list of the various power relays associated with LSI Lynx and Panther spring gages. STAR Series Parts A chart with stock parts and their corresponding replacement parts for the STAR series testers. UT Series Parts A chart with stock parts and their corresponding replacement parts for the UT series testers.