Lowrence 3500

Hello All,

I have a Lowrence 3500 GPS with a Lowrence depth sounder in my dash.  It appears to be about 1 3/4 in hole.  I spoke with Airmar today and they identified the thru hull transducer as a P319 50/200 transducer.  Any suggestion on a replacement for only the depth sounder.  As usual the digital display on the dash only shows parts of the numbers.  You don't know if you are in 20 feet of water of 10.
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