The Swift ALT3-40F3 is a modern 3-pointer aircraft altimeter with a range up to 40,000–42,000 feet, designed in a standard 3 1/8 inch panel format for piston and light turbine aircraft installations.

Unlike traditional aneroid altimeters, it uses a MEMS pressure sensor system combined with digital processing while still presenting altitude via a classic three-pointer analog display (100 ft / 1,000 ft / 10,000 ft pointers).

It is commonly used as a panel upgrade altimeter where pilots want reduced mechanical calibration requirements and improved long-term stability.

Key features include:

3-pointer analog display (100 / 1,000 / 10,000 ft indication)
Maximum altitude range: up to 40,000–42,000 ft
3 1/8” standard aviation instrument form factor
MEMS-based pressure sensing (reduced mechanical drift)
Barometric setting adjustable (inHg / hPa depending on configuration)
Digital processing with analog pointer output
Electrical operation (typically 9–30 VDC supply)
Suitable for GA and experimental aircraft panels
Replaces traditional vacuum/mechanical altimeters
Reduced need for frequent recalibration vs mechanical units