Rotary 9108 Belt Measurer Gauge by Rotary $26.39 Sold out 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out PRODUCT INFORMATION Type Gauge PRODUCT DESCRIPTION DESCRIPTION Belt Measurer. Measures 3/8", 1/2", & 5/8". Fractional Horse-Power Belts as well as A & B Section Industrial Belts up to 110".