32-400 CST/berger 15-1/2'' Single Measuring Wheel Feet (Rolatape) features a steel construction with 4ft circumference wheel which handles measuring for heavy construction, large commercial operations, utility companies, land surveying and other critical applications. 32-400 CST/berger 15-1/2'' Single Measuring Wheel Feet (Rolatape) measures in 1in increments for surveying and has a 5-digit counter that records 10,000ft with a convenient rest knob making easier measuring/accuracy on rough terrain.