The GSA-024 is based on a large single needle gauge is and has the proper faceplate to show VSI from -6000 to 0 to 6000 feet/min.
The steppermotor gives very smooth needle movements.
height 83 mm
width 83 mm
depth 27 mm
weight 200 gr
mounting 4 screws
lights= 2 LED
type daisy chain, 10 pin connector on flat cable (10 wires flatcable)
You will need the GSA-055 (central interface) to connect the gauge to the computer.