85mm Analogue GPS Speedometer
| Diameter | 85mm |
|---|---|
| Type | analogue (needle) GPS speedometer |
| Speed range | 0-15, 0-30 or 0-60 knots |
| Display | speed (SOG) and compass heading (COG) |
| GPS aerial | included |
| Power | 12V or 24V |
| Waterproof rating | IP65 |
| Face | black or white |
| Bezel | black or white plastic, or 316 stainless |
An 85mm GPS speedometer with a traditional analogue dial, showing speed over ground and a compass heading without a sender, paddlewheel or through-hull fitting. Because it reads position from satellites, the speed isn't affected by water flow, tide or wheel size.
It's a stand-alone gauge — the GPS aerial is included and simply plugs into the back, so it fits in minutes on a new build or a retrofit, with nothing else to connect. Choose the speed range to suit the boat: 0–15, 0–30 or 0–60 knots.
- 85mm analogue GPS speedometer with compass heading (COG)
- Speed ranges: 0–15, 0–30 or 0–60 knots
- GPS aerial included — plugs straight in, no sender or paddlewheel
- Stand-alone — no connection to other instruments
- 12V or 24V
- IP65 — protected against water spray
- Choice of black or white face, with a stainless, black or white bezel
The aerial needs a clear view of the sky — mount it outside or inside behind the windscreen — and the speed and heading update once you're under way.
The display is for reference only and should not be used as your sole means of navigation.
Prefer a digital readout with switchable units (knots, mph or km/h)? See the digital GPS speedometer →, or browse all speed gauges →. Running 24V? A voltage regulator → gives the dashboard a steadier supply.
| Diameter | 85mm |
|---|---|
| Type | analogue (needle) GPS speedometer |
| Speed range | 0-15, 0-30 or 0-60 knots |
| Display | speed (SOG) and compass heading (COG) |
| GPS aerial | included |
| Power | 12V or 24V |
| Waterproof rating | IP65 |
| Face | black or white |
| Bezel | black or white plastic, or 316 stainless |
An 85mm GPS speedometer with a traditional analogue dial, showing speed over ground and a compass heading without a sender, paddlewheel or through-hull fitting. Because it reads position from satellites, the speed isn't affected by water flow, tide or wheel size.
It's a stand-alone gauge — the GPS aerial is included and simply plugs into the back, so it fits in minutes on a new build or a retrofit, with nothing else to connect. Choose the speed range to suit the boat: 0–15, 0–30 or 0–60 knots.
- 85mm analogue GPS speedometer with compass heading (COG)
- Speed ranges: 0–15, 0–30 or 0–60 knots
- GPS aerial included — plugs straight in, no sender or paddlewheel
- Stand-alone — no connection to other instruments
- 12V or 24V
- IP65 — protected against water spray
- Choice of black or white face, with a stainless, black or white bezel
The aerial needs a clear view of the sky — mount it outside or inside behind the windscreen — and the speed and heading update once you're under way.
The display is for reference only and should not be used as your sole means of navigation.
Prefer a digital readout with switchable units (knots, mph or km/h)? See the digital GPS speedometer →, or browse all speed gauges →. Running 24V? A voltage regulator → gives the dashboard a steadier supply.
Fitting on 12V or 24V — and why a voltage regulator helps
A 12V system is never a steady 12V: it sags under load, rises to 14V or more on charge, and spikes as things switch on and off. The gauge sees all of it, so readings can wander with the state of the electrics rather than with what you’re measuring. A voltage regulator delivers a clean, steady voltage whatever the supply is doing — so the gauge reads consistently, the backlight stays even, and sensitive electronics are protected from spikes.
On a 24V system a dropping resistor is supplied to suit the gauge, but a regulator is the better option: resistors run hot, waste power and add a failure point at each gauge, whereas one regulator feeds the whole dashboard from a single clean supply (the 3A model runs up to 20 standard 52mm gauges, the 5A up to 38).
Why voltage regulators matter → · Browse voltage regulators →