Except for Signet. They are still a small company in Southern California building sailboat instruments. And they build a special knotmeter for us that is a perfect replacement for thousands of round instruments installed in early Catalinas. Most of the companies who built round instruments are now out of business. But our knotmeter is a great replacement for several reasons:

• They are built to the same high standards as always.
• Four small magnets in a paddlewheel transducer with four vanes begin to rotate at a very low speed threshold making for great light air sensitivity.
• The 4-1/2" round case (5-1/2" bezel) was the largest in the industry and therefore will fill the bulkhead mounting hole of almost any instrument.
• The flush thru-hull fitting must be countersunk into the fiberglass (for racers).
• The 2" diameter thru-hull fitting is as large or larger than most companies' fittings making it easy to retrofit in place of your existing instrument.
• The 0 to 8 knot range provides more space between each marking on the dial making it easier to see even a small change in boat speed.
• Red night lighting can be wired to your running light circuit for good night time visibility.
• No external power source is required for the instrument.

1) Confirm the diameter of your instrument housing, instrument bezel and thru-hull transducer by measuring to ensure an appropriate fit before ordering.

2) The early countersunk transducer thru-hull is available If you are replacing another Signet instrument installed with a flush mounted thru-hull transducer fitting.

3) If you prefer an instrument face with a 0-12 knot range they are available by special order. Please call and ask for #Z2461.