

📏 Navigate with confidence—where precision meets adventure!
The Weems & Plath Marine Navigation Parallel Ruler features a 15-inch length with durable aluminum arms and handles, offering both metric and imperial measurements. Lightweight at 7.5 oz, it’s designed for precise, reliable marine navigation and trusted by professionals worldwide.
| ASIN | B000IMT1M8 |
| Batteries included? | No |
| Best Sellers Rank | 34,085 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 203 in Rulers (Stationery & Office Supplies) |
| Brand | Weems & Plath |
| Color | Aluminum Arms |
| Customer Reviews | 4.7 4.7 out of 5 stars (226) |
| Date First Available | 3 Mar. 2012 |
| Is discontinued by manufacturer | No |
| Item model number | 141 |
| Manufacturer | Weems & Plath |
| Material type | Aluminium |
| Product Dimensions | 38.35 x 7.37 x 0.1 cm; 190 g |
| Size | 15-Inch |
| Sport | Boating |
| Style | Parallel Ruler |
| Weight | 1.5 kg |
J**.
Has metric and imperial measurements
Great size, and quality. Has both metric and imperial measurements, which I deem essential.
B**Y
Good quality for price
Good quality for price. Does exactly what it was purchased for.
J**K
Best Ive used!
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!
M**M
Reasonably good parallel action ruler.
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.
A**R
Five Stars
perfect
D**D
Five Stars
Nice strong product.
C**A
Four Stars
good
V**D
Good quality
Can recommend this particular for the deck officers.
S**R
Excellent set! Having the slightly larger parallels is well worth it. Replaced my 12” with this 15” and will never look back. Excellent quality, easy to use and durable.
J**R
Ha tardado en llegar, pero ha merecido la pena.
R**P
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.
M**.
Super cool
J**N
These parallel rules by Weems & Plath seem to be ubiquitous in navigation classes and on the water. They have little cork pads on the bottom to help prevent slipping on the paper chart. I chose the model with the protractor scale and that feature comes in handy sometimes but is not always needed.
Trustpilot
1 month ago
1 month ago