The best replacement for anemometer is manometer.

The best alternatives to anemometer are rated as following:
★★★★★  manometer
★★★★  pitot tube
★★  beaufort scale
★★  velometer
★  hot wire
★  balometer
★  wind vane
★  barometer

Your alternative for anemometer is not listed? Suggest!
Speaking about anemometer, one probably shouldn't forget about wind vane.

Other search terms related to anemometer and their ratings are:
★★★★★ wind vane
★★ vane
★ cfm
You have in mind a companion for anemometer and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of anemometer in all years. Click on graph for more.
anemometer
manometer
pitot tube