Boeing 737 Wet Compass – High-Fidelity Replica for Flight Simulation
Purpose-built for cockpit builders, this is a precision replica of the Boeing 737 NG standby “wet” compass, engineered for seamless integration with modern flight simulators. Dimensionally and visually accurate to properly replicate the original instrument, it replaces the liquid-damped magnetic card with a quiet micro-stepping motor for smooth, low-latency heading indications—ideal for motion or fixed-base cockpits.
Key Features
- Authentic look & scale: bezel
geometry, dome profile, card typography, and index markings
modeled after the 737 flight deck unit.
- Realistic behavior: the compass
card movement is dynamically driven by the aircraft’s
magnetic heading and is further influenced by flight
parameters and geographic latitude. This allows the unit to
reproduce realistic compass behavior, including smooth lag
and heading response consistent with real-world wet
compasses. The system simulates latitude-dependent dip
effects and turn/acceleration errors, providing a level of
realism suitable for advanced high-fidelity 737 flight
decks.
- Simulator compatibility: works
with popular platforms including Microsoft Flight Simulator (MSFS), FSX, X-Plane, Prepar3D
and ProSim 737. Further compatibility with
additional client simulators is guaranteed via SimConnect
and FSUIPC.
Technical Overview
- Mounting: designed for the upper windshield center
post location common on 737 cockpits; uses
standard bracket patterns.
- Power Supply & I/O: powered
directly via USB-C,
the unit requires no external power supply. A single USB
connection provides both power and data interface to the
host system. Doesn't require dedicated controllers. This
simplifies cockpit wiring and ensures easy integration.
- Calibration: automatic zero-point
homing routine at power-up; software offset for precise card
alignment.
- Lighting: the unit features warm white flood lighting, supporting
three selectable modes — DIM, BRT (bright),
and OFF.
This provides realistic night and low-light cockpit
operation without additional external lighting circuits.
- Software and setup: works via FSC
ModuleHUB driver, compatible with most popular client
simulators and avionic software. The initial setup is
straightforward: simply connect the unit to your PC and the
device is automatically detected by the provided software.
In the Box
- 737 wet-compass replica assembly.
- Quick start guide.
- Software driver.
![FSC B737 Wet Compass 34 front]()
The new FSC B737 Wet Compass
![FSC B737 Wet Compass front bright backlit]()
B737 Wet Compass Bright Backlight
![FSC B737 Wet Compass front dim backlit]()
B737 Wet Compass Dim Backlight
![FSC B737 Wet Compass front backlight off]()
B737 Wet Compass Backlight OFF
![FSC B737 Wet Compass back USB connection]()
FSC B737 Wet compass USB-C connection
![FSC B737 Wet Compass connection plate]()
FSC B737 Wet Compass connection plate
![FSC B737 Wet Compass installed in cockpit]()
FSC B737 Wet Compass installed in cockpit