The SL55005-13-N00 tachometer is an aircraft engine RPM indicator designed for Cessna piston aircraft installations. It displays engine speed in revolutions per minute (RPM) by receiving input from a magneto or tach signal generator and converting it into a calibrated mechanical/electrical display.

It is a panel-mounted round instrument used to monitor engine operating speed and ensure operation within safe RPM limits during all phases of flight.

Key features include:

OEM-style Cessna-compatible tachometer instrument
Panel size aircraft standard (3-1/8” class)
Displays engine RPM (tachometer function)
Compatible with magneto / tach signal input systems
Mechanical or electronic sensing (variant dependent)
Designed for piston aircraft engine monitoring
Vibration-resistant instrument construction
Backlit dial for cockpit readability (configuration dependent)
Used in general aviation aircraft instrument panels
Installed in certified and legacy Cessna aircraft systems