The L.S. Starrett Co. has expanded the horizontal X-axis travel on its HB400 benchtop optical comparator from 12" to 16" (300mm to 400mm), providing users the versatility to measure larger parts on its workstage. Available with optical edge detection, the HB400 model is a workhorse of the broad line of Starrett comparators, providing performance levels previously only available with floor standing machines.