Is the cm is displayed?

Hello! Unfortunately just inches are displayed.

For taking basic nav course, could this be used instead of the standard par. rulers/divider/prot? iow, could i take base course using this? thanks

I would use this as an adjunct. You need to know how to use parallel ruler, dividers etc on a map for the navigation course.

What is the maximum distance between the 2 rulers, commonly called the opening width? Thanks!

Hi Caroline, this ruler does not open up, it is a rolling type of plotter. Regards Mark

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Weems & Plath

Product ID: 1404625

Details

Brand
WEEMS & PLATH
Item Weight
4.96 ounces
Map scale
1:20 000; 1:40
Number of Items
1

📏Multi-scale distance plotting

🧭Precision protractors for bearings

⚙️Marine-grade aluminum roller

MOP$667

Duties & taxes included

In stock

Sold byAmazon MacauDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Macau.

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Description

🧭 Navigate Like a Pro, Plot Like a Boss!

DUAL SCALE VERSATILITY - Features both inch and nautical mile scales to adapt to any marine navigation need.
READY TO GO CONVENIENCE - Comes with a reusable storage sleeve featuring clear instructions—navigate smarter, not harder.
PRECISION COURSE MEASUREMENT - Semi-circular and dual quarter-circle protractors ensure exact course and bearing readings every time.
EFFORTLESS NAVIGATION MASTERY - Durable acrylic plotter paired with a smooth aluminum roller for seamless chart plotting.
TAILORED FOR U S COAST CHARTS - Includes distance scales at 1:20,000, 1:40,000, and 1:80,000 to perfectly match official marine charts.

The Weems & Plath marine plotter combines a durable acrylic plotting surface with a marine-grade aluminum roller, offering precise distance scales tailored for U.S. Coast and Harbor Charts. Equipped with multiple protractors for accurate course and bearing measurements, plus dual inch and nautical mile scales, it’s the essential tool for confident, professional-grade marine navigation.

Specifications

ASIN	B0000AY1BQ
Additional Features	Aluminum roller assembly for easy course plotting and parallel line transfer, protractors for measuring courses and bearings
Best Sellers Rank	#121,206 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Boat Compasses
Brand Name	WEEMS & PLATH
Customer Reviews	4.6 4.6 out of 5 stars (677)
Global Trade Identification Number	00721002001207
Included Components	Aluminum roller assembly, Semi-circular protractor, Two quarter circle protractors, Instructions on back of plastic storage sleeve
Item Weight	4.96 ounces
Manufacturer	Weems & Plath
Manufacturer Part Number	120
Map Scale	1:20,000; 1:40,000; 1:80,000
Model Number	120
Number of Items	1
UPC	721002001207

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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MOP$667

Duties & taxes included

In stock

Sold byAmazon MacauDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Macau.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews