Loma Metal Detector with Conveyor. S/N 20477. Sensitivity tested with test strips as 3.5 mm ferrous metals, 3.0 non-ferrous metals, and 3.5 mm non-magnetic stainless steel. Actual numbers may vary depending on local site conditions, product tested, and other factors. Maximum aperture/clearance above belt: 16 in. W x 6 in. H. Contract number MD20/5912, 110 V, 60 Hz, frequency 117 k/cs, transmitter vinkor part number D4572, receiver vinkor part number D4571. Belt dimensions: 66 in. L x 12 in. W. Conveyor motor: 1/4 hp, 1,725 rpm, 60 Hz, 1 phase, 208-115/230 V, 5.0/2.5 amp. Overall dimensions: 68 in. L x 35 in. W x 52 in. H.