The 1331A Storage Monitor is a compact half rack size storage monitor for displaying analog and digital computer generated information with the ability to write and store in shades of gray. 5 MHz Z-axis bandwidth and an internal graticule for quick measurements. Resolution is 18 lines per division (1 division = .95 cm) with storage time >1 min. (writing mode) and >15 min. (storage mode). Primary controls brought out to front panel including storage and variable persistence controls. X, Y and Z inputs by rear panel BNC connectors.