$35.00
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$$35.00 () Includes selected options. Includes initial monthly payment and selected options. Details
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Weems & Plath Marine Navigation Parallel Ruler (Aluminum Arms, 15-Inch)

4.8 4.8 out of 5 stars 205 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Boat Compasses by WEEMS & PLATH
$35.00
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Purchase options and add-ons

Material Aluminum
Brand WEEMS & PLATH
Color Aluminum Arms
Style Parallel Ruler
Graduation Range 15 Inches

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Weems & Plath Marine Navigation Parallel Ruler (Aluminum Arms, 15-Inch)
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Product Description

15 inch length, 0.22 inch thickness, aluminum arms and handles. Wt. 7.5 oz.

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Weems & Plath Marine Navigation Parallel Ruler (Aluminum Arms, 15-Inch)

Weems & Plath Marine Navigation Parallel Ruler (Aluminum Arms, 15-Inch)

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
205 global ratings

Customers say

Customers like the length, ease of use, value, navigation, and quality of the ruler. They mention that it's the number one navigation tool for charting, helpful in plotting positions, and durable.

AI-generated from the text of customer reviews

28 customers mention28 positive0 negative

Customers are satisfied with the quality of the ruler. They mention it's durable, well-made, and extremely useful for plotting and charting.

"Good quality!!!" Read more

"...He was very impressed with the quality of the product." Read more

"Perfect. Easy to read, nice and smooth. Used it for sailing classes and worked perfectly...." Read more

"the parallel rules are extremely useful for me when plotting and charting positions as well as determining bearings...." Read more

8 customers mention8 positive0 negative

Customers find the ruler to be a standard device for navigation. They mention it's perfect for navigating, helpful in plotting offshore race courses, and great for hobby work and plotting exercises.

"Great for plotting and large enough to move to and from Compass rose" Read more

"...Not too long for a mediium sized chart table, and still able to track from compass rose across a chart without any difficulty...." Read more

"...Helpful in plotting offshore race courses." Read more

"Perfect for navigating. Exactly what I wanted!" Read more

8 customers mention8 positive0 negative

Customers like the value of the rulers. They mention that it's a great value and money well spent.

"Good price on these. Mine have held up for over a year and no signs of warping to date...." Read more

"...The Weems and Plath is well made and the characters easy to read. Money well-spent!" Read more

"...a coastal piloting maritime class that I am taking, great piece of equipment for the price." Read more

"These rulers are a great value. They are a reasonable size for most charting and standup to being in a nav bag." Read more

5 customers mention5 positive0 negative

Customers find the ruler easy to use and accurate. They also say it's a well-made, parallel ruler that's easy to read.

"Very easy to use and accuracy." Read more

"...No issues with them becoming sticky, difficult to use, or the cork pads on the bottom coming off...." Read more

"This is something you can easily learn to use. A must for boaters in a situation that you lose nav capabilities...." Read more

"This is a very well made, easy to use parallel ruler. Weems and Path make an excellent product. I would definitely recommend it." Read more

4 customers mention4 positive0 negative

Customers find the length of the ruler perfect for charting, stowing, and use. They also say it's not too long for a medium-sized chart table and still able to track. Customers also say the ruler is a reasonable size for most charting and stands up to being in a nav bag.

"...Perfect length, great for charting." Read more

"These parallel rules do the trick superbly. Not too long for a mediium sized chart table, and still able to track from compass rose across a chart..." Read more

"These parallel rules are just about the right length to stow as well as use. They don't slip nearly as badly as others I have purchased." Read more

"These rulers are a great value. They are a reasonable size for most charting and standup to being in a nav bag." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the stiffness of the ruler. They mention that it doesn't slip nearly as badly as others, and it moves nicely across the chart. Some customers also say that the ruler is sticky and difficult to use.

"...No issues with them becoming sticky, difficult to use, or the cork pads on the bottom coming off...." Read more

"...They don't slip nearly as badly as others I have purchased." Read more

"Action is smooth and moves nicely across the chart." Read more

"Slips easily on map and is stiff moving...." Read more

Top reviews from the United States

Sandra
5.0 out of 5 stars Good quality!!!
Reviewed in the United States on July 29, 2023
Verified Purchase
Good quality!!!
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Patrick Faller
5.0 out of 5 stars A few dollars more but better to have 15 inch
Reviewed in the United States on August 14, 2023
Verified Purchase
Great for plotting and large enough to move to and from Compass rose
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KN
5.0 out of 5 stars Good quality and reasonable prices.
Reviewed in the United States on June 4, 2021
Verified Purchase
Very easy to use and accuracy.
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Sue Cerri
5.0 out of 5 stars Very good quality instrument
Reviewed in the United States on December 26, 2019
Verified Purchase
The product arrived on time. My son got this for Christmas, and won't go sailing for months, but plans to practice using this on a map that he has. He was very impressed with the quality of the product.
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Amazon Customer
4.0 out of 5 stars Good price on these
Reviewed in the United States on June 22, 2016
Verified Purchase
Good price on these. Mine have held up for over a year and no signs of warping to date. No issues with them becoming sticky, difficult to use, or the cork pads on the bottom coming off. I don't leave them in the sun, out in the heat, or on a boat which probably helps. Perfect length, great for charting.
6 people found this helpful
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KLF
5.0 out of 5 stars Chart Plotter
Reviewed in the United States on August 10, 2022
Verified Purchase
This is something you can easily learn to use. A must for boaters in a situation that you lose nav capabilities. Lays flat in your nav station desk top.
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RP
5.0 out of 5 stars Perfect. Easy to read
Reviewed in the United States on June 1, 2018
Verified Purchase
Perfect. Easy to read, nice and smooth. Used it for sailing classes and worked perfectly. Only thing I would caution buyers about be careful of the size, I like the larger size but some chart books are smaller and it doesn’t fit easily.
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Taye Campbell
5.0 out of 5 stars Excellent quality
Reviewed in the United States on September 26, 2020
Verified Purchase
Purchased this ruler for my boyfriend. He loves it and says it’s perfect for drawing his charts.! Also, delivery was fast!
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Top reviews from other countries

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James S.
5.0 out of 5 stars Has metric and imperial measurements
Reviewed in the United Kingdom on January 30, 2023
Verified Purchase
Great size, and quality. Has both metric and imperial measurements, which I deem essential.
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Jose Luis Cañon Aguilar
4.0 out of 5 stars Calidad
Reviewed in Spain on April 2, 2019
Verified Purchase
Ha tardado en llegar, pero ha merecido la pena.
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jack
5.0 out of 5 stars Best Ive used!
Reviewed in the United Kingdom on March 4, 2019
Verified Purchase
Bought for Radar plotting in preparation for my OOW! bought a few from chandlers before, but the cork really makes the difference in zero slip! great product!
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Amazon Customer
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on September 1, 2017
Verified Purchase
perfect
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M. Fordham
4.0 out of 5 stars Reasonably good parallel action ruler.
Reviewed in the United Kingdom on June 10, 2017
Verified Purchase
Reasonably good parallel action ruler. Clear plastic with protractor markings printed on the lower surface and not engraved, I expect these will wear off much sooner because of this. Marketed by American company but made in China hence the cheaper production I guess.
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