• 8x42 monocular with compass

8x42 Marine Monocular with Compass

8x42 Marine Monocular with Compass

£118.00
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No EU VAT on your order Orders shipped outside the EU are not charged EU VAT. Prices in the EU include your country's VAT.
  • 8x magnification with a compass bearing in view
  • BaK-4 glass prism for a sharp, bright image, not plastic
  • Distance scale in view, no batteries
  • Waterproof, one hand, works with your glasses on
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Delivery Estimated Delivery: Nov 09 - Nov 23
  • Free shipping over £50
  • 30 day returns
  • 2 year warranty
  • Real human support
8x42 Marine Monocular with Compass

8x42 Marine Monocular with Compass

£118.00
SAVE 0% Sold out
View full details

Key specs

Three instruments in one hand

8x42Magnification and lens
BaK-4Glass prism for a sharp, bright image
123 mField of view at 1000 m
340 gLight enough for one hand

Compare

The same job, done lighter

8x42 Plastimo8x42 Bresser7x50 Hawke7x42
Prism glass BaK-4 BaK-7 BaK-4 BaK-4 + ED
Weight 340 g 370 g 480 g 405 g
Field at 1000 m 123 m 123 m 107 m 131 m
Compass Yes Yes Yes Yes
Distance scale Yes Yes Yes Yes
Price $ $$ $ $$$

Specs from the makers and retailers, checked October 2026. Distance scale = a scale etched in the view, not a laser. Price: $ up to €120, $$ €120 to €160, $$$ over €160, normal EU store prices October 2026.

What it is

The Windie Marine Monocular does the job of three instruments without asking for a second hand. Look through it and you get eight times magnification, a compass bearing along the bottom of your view, and a scale that turns any object of known height into a distance. It weighs 340 grams, it is waterproof, and it works with your glasses on. Built for sailors, race officers and coaches who need an answer now and cannot put down what they are holding.
Full specifications
Magnification and lens8x42
DesignRoof prism
Prism glassBaK-4
Angular field of view7.0 degrees
Field of view at 1000 m123 m
Field of view at 1000 yds369 ft
Exit pupil5.25 mm
Eye relief18 mm
Closest focus12 m
Lens coatingFully multi-coated
Weather protectionWaterproof
Weight340 g
ReticleMil scale, 10 mils per number
CompassAnalog, 0 to 360 degrees, 1 degree marks
Compass balanceZone C, latitude 20°N to 40°N (Mediterranean, Middle East, southern US)
Product details
Waterproof 8x42 marine monocular with a built-in compass and rangefinder reticle. BaK-4 prisms; works with glasses; one-handed. 2-year warranty.

About the compass

Every magnetic compass is balanced for one part of the world. The earth's magnetic field pulls the needle toward north, and it also pulls it slightly down. That downward pull gets stronger the closer you are to the poles, so makers balance the compass card to sit level in one zone.

The compass in this monocular is balanced for Zone C, latitude 20°N to 40°N: the Mediterranean, the Middle East and the southern US. If you sail further north, for example in Northern Europe, the card may sit at a slight tilt. In everyday use, a quick look and a bearing, it works as normal.

Shipping

Orders to the EU ship from our warehouse in Europe. Orders to the rest of the world ship from our warehouse in China. Free shipping on qualifying orders: your cart shows the threshold in your currency.

Returns and warranty

30 day returns. 2 year global warranty: if it breaks, we fix or replace it.

Reviews

New in our range

No reviews for this product yet. Windie gear is rated 4.8 out of 5 across 75 reviews.

Questions

Good to know

Is the Windie Marine Monocular waterproof?
Yes. It is sealed and rubber armoured for marine use, so rain, spray and a dunking are all fine. Dry the eyepiece and the front lens before you look through it, or you will just be looking at water drops. After a day on salt water, rinse the body with fresh water and dry it.
What is better on a boat, a monocular or binoculars?
A monocular leaves you a hand free, weighs about half as much, and there are no two barrels to line up with your eyes while the deck is moving. Binoculars give a more relaxed view for long watches, so if you are scanning the horizon for an hour they win. For grabbing a quick look, a bearing or a distance while you are steering, the monocular is the one you will actually pick up.
How does the rangefinder work without batteries?
It is a scale etched into the optics, not electronics. Every number on the scale is 10 mils, and one mil covers one metre at a thousand metres. Count how many numbers an object fills, then divide its real height in metres by that number of mils and you have the distance in kilometres. A 30 m lighthouse filling 60 mils is 0.5 km away. It is an estimate rather than a laser measurement, but nothing can run out of charge.
Can I use the monocular with glasses on?
Yes, and you should. Fold the rubber eyecup down and your glasses sit where the eyecup was. There is 18 mm of eye relief, which is generous, so you still see the whole picture. If you are short sighted, keep your glasses on, because without them the monocular may not focus properly on things far away.
What is the difference between BaK-4 and BaK-7 prisms?
Both are optical glass, but BaK-4 is the denser, higher grade one. Inside the prism it reflects all of the light, so the image is brighter and sharper right to the edge. BaK-7 is cheaper and lets some light escape, so the edges of the view look grey and the image is a little darker, which you notice most at dawn, at dusk and in haze. The Windie Marine Monocular uses BaK-4.

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