Symmetricom's cesium beam tube replacement services offer you both time and cost savings. Installation of a replacement tube restores your cesium instrument's tube performance and can extend your cesium instrument's life span at a fraction of the cost of a new instrument. The appropriate high or standard performance replacement cesium beam tube meets or exceeds the original performance levels when all other components of the instrument perform to original specifications. We offer cesium beam tube replacement for all Symmetricom cesium instruments and many models of cesium instruments formerly manufactured by Hewlett-Packard? Agilent?and Datum?