The 7550A Graphics Plotter is an outstanding value on this high performance plotter offering both HP-IB and RS-232C interfaces. Great for many applications, accepts A3/B and A4/A size media, uses drafting media pens, and will rotate graphs 90? for a choice of either horizontal or vertical formats. Designed for easy operation, the 7550A has an automatic sheet feeder and utilizes a front panel display and function keys to guide through each plotter setup, report plotter status and give program messages. Acceleration: 6 g (80 cm/S); 0.006 mm mechanical resolution; addressable step size down to 0.025 mm; repeatability of 0.1 mm.