What are the dimensions of this slide rule?

Rule itself is 7 3/8" square. Slipcase measures 8 1/8" x 7 5/8"

How does this differ from the E6B Aviation caalculator?

Our device is solely for time, speed & distance calculations usually in the marine environment. The e6b appears to have other functions for aviation, including altitude and off course corrections, airspeed & density, etc.

What is the lowest mph reading?

The speed scale reads from 1 to 100 knots or MPH.

Weems And Plath Marine Navigation Nautical Slide Rule

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Description

⚓ Navigate smarter, not harder — your pocket-sized marine genius!

CLEAR ACCURATE - Easy-to-read layout ensures quick, precise navigation even in challenging environments.
COMPACT DURABLE - Lightweight ABS plastic design fits in your pocket and withstands marine conditions.
NAVIGATE LIKE A PRO - Trusted by the U.S. Navy for precision and reliability in every calculation.
VERSATILE UNIT MASTERY - Seamlessly convert between knots, mph, hours, minutes, seconds, and multiple distance units.
EFFORTLESS CALCULATIONS - Solve speed, time, and distance problems instantly—no batteries, no fuss.

The Weems & Plath Marine Navigation Nautical Slide Rule is a compact, durable, and highly accurate analog tool designed for instant speed-time-distance calculations. Trusted by the U.S. Navy, it supports multiple units including knots, mph, nautical and statute miles, and offers a clear, easy-to-read interface. Crafted from robust ABS plastic, it’s lightweight and portable, making it an essential navigation companion for professionals and enthusiasts alike.

Specifications

Asin	B0000AYILW
Best Sellers Rank	148,440 in Sports & Outdoors (See Top 100 in Sports & Outdoors) 189 in Marine Electronics
Brand Name	Weems & Plath
Customer Reviews	4.6 4.6 out of 5 stars (180) 4.6 out of 5 stars
Global Trade Identification Number	00721002001054
Item Dimensions L X W	18.4L x 18.4W centimetres
Item Weight	141 g
Manufacturer	Weems & Plath
Manufacturer Part Number	105
Material Type	Metal
Model Number	105
Mounting Type	Desk Mount/Handheld
Number Of Items	1
Special Features	Lifetime Warranty
Unit Count	1.0 count
Upc	721002001054

Reviews

User

Magic calculator for navigation ..

Does what it says in the blurb .. I bought a "straight" one too .. prefer this.

24.02.2020

User

Five Stars

Good value

20.01.2017

User

Five Stars

very easy to use and read.

3.09.2015

User

Excellent

Well made and sturdy

22.06.2021

User

Ottimo regolo nautico

Consente immediatamente calcoli necessari alla navigazione.

7.12.2025

User

Rechenschieber für die Weg-/Zeit-Berechnung

Die Rechenscheibe erfüllt ihren Zweck ohne Probleme. Ob ich sie wirklich brauche? So schwer ist der Dreisatz ja eigentlich nicht. Wer aber nicht gerne rechnet, kann dies mit der Scheibe einfacher erledigen.

24.12.2025

User

Excellent

Calculs rapidement fait sans être dépendant d'une pile ou batterie.

30.03.2021

User

Five Stars

I think I have wrote this already Good product buy it

9.04.2017

User

Works perfectly

I've used these for years, simplifies time/distance calculation

14.04.2026

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

RM262

Duties & taxes included

In stock

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Weems & Plath Marine Navigation Nautical Slide Rule

Details

Details

Description

Specifications

Reviews

Common Questions