THE STARRETT CRYSTAL PINK GRANITE SURFACE PLATE MEASURES 36 INCHES BY 48 INCHES WITH A THICKNESS OF 8 INCHES, PROVIDING A ROBUST AND STABLE PLATFORM FOR PRECISION MEASUREMENT TASKS. CONSTRUCTED FROM CRYSTAL PINK GRANITE, THIS SURFACE PLATE IS RENOWNED FOR ITS EXCEPTIONAL WEAR RESISTANCE, MAKING IT A RELIABLE CHOICE FOR LONG-TERM USE IN QUALITY CONTROL ENVIRONMENTS. IT IS CLASSIFIED AS GRADE A, SUITABLE FOR GENERAL INSPECTION WORK, AND OFFERS A FLATNESS UNILATERAL TOLERANCE OF 0.000200 INCHES (0.0050 MM), ENSURING HIGH ACCURACY IN MEASUREMENTS. THE SURFACE PLATE IS DESIGNED WITHOUT LEDGES, OPTIMIZING THE USABLE SURFACE AREA. IT FEATURES A T-SLOT TRACK RUNNING THROUGH THE MIDDLE, ALLOWING FOR SECURE BOLTING OF ITEMS TO THE PLATE, AND INCLUDES FOUR THREADED HOLES FOR ADDITIONAL ATTACHMENT OPTIONS. THIS CONFIGURATION MAKES IT IDEAL FOR VARIOUS QUALITY CONTROL TASKS, PROVIDING BOTH PRECISION AND VERSATILITY IN MEASUREMENT APPLICATIONS.