Product guide

Mares Compas Pratique 414504 North-Hemisphere Diving Compass

North-Hemisphere: The Mares Compas Pratique 414504 is a diving compass listed for Northern Hemisphere use, with a vest-mount reel, oil bath and side-reading window. The listing also gives a wrist mount, so confirm the fitting arrangement for the version selected before buying.

At a glance

The listing describes an oil-bath compass intended to keep its reading stable while moving underwater.
A side window is provided for reading the compass during a dive.
The product title and feature text specify Northern Hemisphere calibration.
The feature text describes a vest attachment with retractable reel, while the details field lists a wrist mount.

Price

£54.60Save 35%

Reference price: ~~£84.00~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

A side-reading window can make direction checks more convenient while diving.
The stated oil bath is intended to steady the compass reading during movement.
The claimed retractable reel offers a vest-attachment option for divers who prefer the instrument close at hand.

Technical specifications

6 specifications

Identity
Brand	Mares
Model	414504

Dimensions and installation
Mounting type listed	Wrist Mount
Dimensions listed	10.5L x 7W centimetres
Weight listed	0.1 Kilograms

Materials and protection
Material listed	Plastic

What to know before buying

Listing details to confirm

The mounting details are inconsistent: the title and feature text describe vest mounting with a retractable reel, while the technical details list Wrist Mount. Confirm the exact mounting arrangement and included reel for the selected listing. Northern Hemisphere calibration is stated, so buyers diving elsewhere should check suitability.

Who is it for?

A good fit for

Divers seeking a compass specified for Northern Hemisphere use.
Divers who want a side-reading window and an oil-bath compass.
Buyers looking for a vest attachment with a retractable reel, subject to confirming the selected configuration.

Less suited to

Divers who need a compass explicitly calibrated for the Southern Hemisphere.
Buyers who require a confirmed wrist-only or vest-only mounting setup without checking the listing configuration.

Customer reviews on Amazon

4.7 / 5 · 55 ratings

5 stars78%78%
4 stars16%16%
3 stars3%3%
2 stars3%3%
1 star0%0%

The page provides aggregate ratings but no written customer-feedback evidence. The rating distribution is mostly in the top categories, with a smaller portion in the middle and lower categories. These figures indicate generally favourable ratings but do not reveal what customers liked or disliked, or how the compass performs underwater.

Frequently asked questions

Is the Mares Compas Pratique 414504 intended for Northern Hemisphere use?

Yes. The title and feature text describe it as calibrated for the Northern Hemisphere. The listing does not establish suitability for the Southern Hemisphere.

Does it mount on a wrist or a diving vest?

The listing conflicts: the title and feature text describe vest attachment with a retractable reel, while the mounting details say Wrist Mount. Check which configuration is supplied with the selected listing.

What is the oil bath for?

The listing says the compass is immersed in oil to provide a stable reading while moving underwater. This is a manufacturer claim, not an independently verified performance result.