K21 UK ASI and (improved) altimeter

This add-on modifies the F7 K21 aircraft by replacing the metric Airspeed Indicator (ASI) and altimeter with a UK version displaying speeds in knots and altitudes in feet. It includes an improved altimeter that utilizes F7 textures with recalibrated needles for enhanced realism. Users should be aware of the two-needle design, which may require additional attention during mountainous or wave conditions.