154-0634-xx
The Tektronix 154-0634-xx (P/N 154-0634-01,154-0634-03,154-0634-10,154-0634-11,154-0634-12,) is a direct-view storage CRT with a split screen feature used in the 5111 and 603.
It has a particularly large screen with an internal graticule of 8 × 10 divisions of 1.27 cm.