IBM 7372 Desktop Plotter 6-Pen A-B Size RS-232 Tabletop For Parts

IBM 7372 Desktop Plotter 6-Pen A-B Size RS-232 Tabletop For Parts

The IBM 7372 is a six-pen tabletop pen plotter capable of producing drawings on ANSI A and B size media. It uses a circular six-position pen carousel to hold multiple pens, allowing automated pen selection during a plot. The plotter communicates with a host computer via an RS-232-C / CCITT V.24 serial interface, configured through a rear DIP switch bank for baud rate, parity, and paper size. An integrated front keypad provides direct pen selection, size selection, view, enter, and directional controls, with Error, B/A3, and A/A4 status indicators.

Specifications & What's Included

• Manufacturer: IBM
• Model / Type: 7372
• Plotter type: Desktop / tabletop pen plotter
• Number of pens: 6 (six-position carousel)
• Supported media sizes: ANSI A and B (letter and ledger / 8.5×11 and 11×17)
• Interface: RS-232-C / CCITT V.24 (DB-25 connector)
• Configuration: Rear DIP switch bank — baud rate, parity, paper size (A/A4 and B/A3)
• Front panel: Integrated keypad — Select Pen (1–6), P1, P2, Enter, Error indicator, Pen #/4, Size, View, Fast, directional arrows
• Status LEDs: Error (amber), B/A3 (green), A/A4 (green)
• Form factor: Tabletop / desktop
• Unit only — no pen carriage, no pens, no cables

Applications

The IBM 7372 is a pen plotter from IBM's early-to-mid 1980s desktop plotter line, designed for use with IBM PCs, IBM PC/XT, and compatible systems running software that output HPGL or IBM's own plotter command language over a serial port. Pen plotters of this era were the standard tool for producing engineering drawings, architectural plans, technical illustrations, and business charts — applications where true vector output and line quality mattered more than raster printing. The 7372 was positioned as a compact, affordable desktop alternative to large-format flatbed plotters, making it practical for office and small engineering environments. Today these units are sought by vintage computing collectors, retrocomputing enthusiasts, and anyone maintaining period-accurate IBM PC setups or needing a functional pen plotter for analog drawing projects.