Welcome to the forum.
You don’t want a bare differential pressure sensor/transducer, you want a differential pressure meter/gauge (aka manometer). Otherwise you’ll have to design the indicator portion of the meter/gauge yourself.
Most industrial/scientific instrument suppliers carry them, and many versions are also available from the big-box industrial parts and equipment suppliers like Grainger and McMaster-Carr.
I think this search shows what Digi-Key offers.