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Ritchie RU-90 Voyager Compass – Flush Mount – Black
Dropping into cramped 3.75-inch helm cutouts, this Ritchie RU-90 navigation sensor turns a 3.0-inch direct-reading CombiDial over hardened steel pivots, canceling console interference with built-in deviation correctors and 12V lighting at 1.5 lbs.
- Sapphire jewel bearing reduces pivot friction
- Direct-reading CombiDial simplifies heading scans
- 12V internal lighting assists night navigation
- Built-in compensators cancel console deviation
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Description
Maintain a direct-reading compass reference at the helm with the Ritchie RU-90 Voyager Compass, a black flush-mount unit using a 3.0-inch CombiDial. Its housing requires a 3.75-inch panel cutout, while 12V internal lighting provides the specified source for low-light dial viewing after electrical connection. Built-in compensators support deviation adjustment, and the internal gimbal joins a sapphire jewel bearing with a hardened steel pivot in the documented movement system.
The 4.9 by 4.9 by 3.7-inch housing weighs 1.5 pounds and operates from negative 4°F to 140°F. Weatherproof construction is verified for the stated operating range. During installation, align the main lubber line with the boat centerline and evaluate the proposed helm location for nearby magnetic objects, speakers, tools, and electrical equipment.
Key Specifications of the Ritchie RU-90 Marine Compass
- The 3.0-inch CombiDial uses direct reading, giving a compatible helm a compact dial format within the black flush-mount housing.
- Internal 12V lighting requires an electrical connection and supplies the specified light source for low-light dial viewing.
- A 3.75-inch cutout defines the required helm-panel opening before installing the 4.9-inch square compass housing.
- Built-in compensators allow deviation adjustment after permanent mounting, making final location selection part of the installation planning process.
- Internal gimbal, sapphire jewel bearing, and hardened steel pivot form the documented movement system behind the direct-reading dial.
- Weatherproof construction operates from negative 4°F to 140°F, defining the stated environmental range for this mechanical instrument.
Helm Use and Readability
This Ritchie marine compass uses a 3.0-inch CombiDial with a direct-reading layout for a compact flush-mount configuration. Internal 12V lighting provides the stated source for dial viewing after connection to a compatible electrical circuit.
The documented gimbal system works with a sapphire jewel bearing and hardened steel pivot. These movement components are contained within the black housing behind the direct-reading card.
Why Choose the Ritchie RU-90 Marine Compass
The RU-90 marine compass combines a compact 3.0-inch direct-reading CombiDial with a 3.75-inch cutout requirement for compatible helm panels. Its 12V internal lighting, built-in compensators, and gimbaled jewel-and-pivot movement create useful comparison points for buyers reviewing illuminated flush-mount mechanical models. The stated 4.9-inch housing dimensions and 1.5-pound dry weight support fitment planning before panel preparation.
Mounting and Compensation Considerations
Confirm the helm panel accepts a 3.75-inch, or 95 mm, cutout and provides clearance for the 4.9 by 4.9 by 3.7-inch housing. Plan the lighting connection, wire route, and mounting orientation before preparing the installation area.
Align the main lubber line with the boat centerline and keep the selected location away from magnetic objects and electrical equipment that may affect the local magnetic field. Built-in compensators allow deviation adjustment after final installation.
Warranty and Support
This model is covered by an Exclusive 5-Year Ritchie Warranty for defects in materials or workmanship from the purchase date. Breakage resulting from accident or misuse is excluded from this coverage. For product details and order support, Mulmarine.com offers assistance before your purchase is placed. Current coverage information and warranty eligibility are available for review on Mulmarine.com before ordering.
Before Ordering the Ritchie RU-90 Marine Compass
Before ordering, verify that your helm accepts a 3.75-inch flush-mount cutout and provides clearance for the 4.9 by 4.9 by 3.7-inch housing. Confirm your 12V lighting connection, planned wiring route, dial-viewing position, and distance from speakers, electronics, tools, or other magnetic-interference sources.
Ritchie RU-90 Voyager Compass - Flush Mount - Black
| Brand | Ritchie |
|---|---|
| Full Model SKU / Code | RU-90 |
| Device Type | Flush Mount Voyager Marine Compass |
| Card Style / Design | Direct Reading CombiDial |
| Apparent Dial Size | 3.0 in / 76 mm |
| Night Lighting / Illumination | 12V Internal Lighting |
| Compensation / Correctors | Built-in Compensators |
| Gimbaling System | Internal Gimbal System |
| Jewel & Pivot Movement | Sapphire Jewel Bearing & Hardened Steel Pivot |
| Operating Temperature | -20°C to 60°C (-4°F to 140°F) |
| Waterproof Rating | 100% Weatherproof Construction |
| Mounting Options | Flush Mount (3.75 in / 95 mm Hole Cutout) |
| Dimensions (L x W x H) | 125 x 125 x 95 mm (4.9 x 4.9 x 3.7 in) |
| Dry Weight | 0.7 kg (1.5 lbs) |
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