38mm专用防水轨迹球
	38mm宽温加固标准军用防水轨迹球， 适合操作台，车载，舰船、机载等多领域使用。 --- 38.1mm (1.5") (nominal), --- 5 Year Warranty, --- IP65/NEMA4 Sealing as Standard, --- Quadrature or Full Protocol interface, --- Interface Options : USB/PS2/RS232/DEC/SUN, --- Can be supplied with interface cables and buttons ----for mounting into customers equipment