The TTL-3000-ASG is an analog aircraft strut inflation and servicing gauge designed for measuring and servicing oleo struts on general aviation aircraft. It is rated for high-pressure nitrogen systems up to 3000 PSI and is commonly used in aircraft maintenance environments for landing gear servicing and pressure adjustment.

The unit combines a precision analog pressure gauge with integrated servicing components, making it a complete strut inflation tool rather than just a measurement device.

Its primary features include:
High-pressure analog gauge rated 0–3000 PSI
Accuracy typically around ±1% full scale 
Includes strut chuck for direct aircraft strut connection
Integrated soft-seat valve for controlled inflation
Built-in air bleed valve for fine pressure adjustment
Designed for nitrogen aircraft strut servicing systems
Portable assembly with protective boot and carrying case (kit version) 
Commonly used for landing gear oleo strut maintenance on GA aircraft

This tool is widely used in aircraft maintenance because it allows technicians to both measure and precisely adjust strut pressure in a single setup, improving accuracy and reducing servicing time during landing gear maintenance operations.