Automotive Compasses: what Claude and GPT would buy

Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.

They disagree: Claude chooses Ritchie Navigation and GPT chooses Bell Automotive

In Automotive, Claude and GPT choose the same brand in 60 of 112 categories.

Claude Opus 5.5 · October 27, 2026

Ritchie Navigation (brand)

Ritchie makes liquid-damped compasses with built-in compensators that can be adjusted to cancel the vehicle's own magnetic field.

Not for: Drivers who only need direction occasionally and already have it in their phone or factory mirror display.

GPT 6.1 Sol · November 10, 2026

Bell Automotive (brand)

A straightforward automotive compass for quick directional checks without relying on a phone, GPS signal, or mobile data.

Not for: Turn-by-turn navigation or precise readings near magnetic interference.

Compensator. Choose a compass with adjustable compensation for deviation and calibrate it after mounting. Steel bodies, speakers and wiring pull an uncompensated compass off by many degrees.
Damping. Prefer a liquid-filled, damped card over a dry floating dial. An undamped card swings constantly on bumps and turns.
Mount location. Mount away from speakers, phone mounts with magnets, and the instrument cluster, with a clear view. Nearby magnets and electronics cause large, sometimes shifting errors.
Night visibility. Look for an illuminated card if you drive off-road or at night. An unlit dash compass is unreadable after dark.

Shops seen in search results on November 5, 2026. A shop missing here may sell it too. Nothing was checked by a person.

Ritchie Navigation: Marine compass maker that also offers vehicle-mount compasses with compensators.

Why is my car compass wrong even after calibrating?

Moving electronics, a new magnetic phone mount or a different mounting spot changes deviation; recalibrate after any change near the compass.