What type of altimeter would indicate a change in pressure altitude when the barometer is adjusted?

The barometric altimeter is designed to measure altitude based on the atmospheric pressure. It operates using a set of internal mechanisms that respond to changes in pressure, which correspond to changes in altitude according to the principles of the standard atmosphere. When the barometric pressure setting on the altimeter is adjusted, it recalibrates to indicate different altitudes based on the new pressure reference.

When the barometer pressure setting is changed, the altimeter will reflect this adjustment by indicating a corresponding change in pressure altitude. This capability is critical for pilots as it allows for accurate altitude readings based on local atmospheric conditions. In contrast, other altimeter types have different operational principles that don't involve adjusting for pressure changes in the same way.

For instance, a radio altimeter provides altitude information relative to the terrain directly beneath the aircraft, and it doesn't factor in atmospheric pressure. A VSI (Vertical Speed Indicator) measures the rate of climb or descent but not actual altitude. A static altimeter measures static pressure but, like the radio altimeter, does not inherently change based on barometric settings unless it is a barometric type with that feature.

Thus, the barometric altimeter is the correct choice, as it reflects altitude changes related to adjusted atmospheric pressure settings.