The gage on the left, in connection with the reference nozzle shown in the center, is a simplified and cost effective gage to measure throat geometry of turbine nozzle openings.

From the raw data area calculator, SPC and other data acquisition are easily accomplished.

The gage on the right is a rugged, proven hydro-mechanical area flow gage suitable for production purposes, and it has been the industry standard for over 30 years.