Nautical Instruments

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Weems & Plath Spare Leads for the Ultralight (7231)

Accessories & Instruments
Spare compass leads are available for Weems and Plath dividers (#176, 178 and 179). The reusable clear plastic case is a safe and convenient container for lead storage.
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4 available
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  • London Store - 4 in stock
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£3.50
£3.50

Weems & Plath 7" Straight Divider (172)

Accessories & Instruments
The 7-inch (17.78 cm) Straight Pattern Dividers are brass with polished stainless steel tips. To adjust tension, turn the adjustment screw at the hinge with a flat-head screwdriver.
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Online Stock:
3 available
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  • London Store - 3 in stock
  • Bristol Store - Out of stock
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£18.99
£18.99

Weems & Plath Ultralight Divider and Compass (176)

Accessories & Instruments
Our Ultralight Dividers are the perfect tools to fill out your navigation kit. They are the best-selling navigation tool in our whole product line, and for good reason. Constructed of coated marine alloy to resist corrosion, these durable dividers are fully adjustable and easy to use. They feature a unique center adjustment mechanism that allows quick, precise one-hand operation. Both tips can be interchang...
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Online Stock:
3 available
Available in stores
  • London Store - 3 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£13.99
£13.99

Weems & Plath Chart Correction Template (9998)

Accessories & Instruments
Chart Correction Template contains the Region A & B IALA Maritime Buoyage symbols required for updating and correcting nautical charts. Keeping charts updated with the Chart Correction Template helps ensure the safety of your crew and vessel. Designed for use with a fine line pen, corrections to nautical charts can be made neatly and quickly with this simple-to-use stencil. These corrections then become a p...
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Online Stock:
3 available
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  • London Store - 3 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£7.99
£7.99

Navigational Instruments

Paperback
by Dunn, Dr. Richard
With over two-thirds of the globe covered by water, the ability to navigate safely and quickly across the oceans has been crucial throughout human history. As seafarers attempted longer and longer voyages from the sixteenth century onwards in search of profit and new lands, the tools of navigation became ever more sophisticated. The development of instruments over the last five hundred years has seen some r...
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3 available
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  • London Store - Out of stock
  • Bristol Store - Out of stock
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£8.99
£8.99

Portland Course Plotter Pack

Stationery
by Blundell Harding
The Portland Plotter is one of the most popular chart work instruments, similar to the Breton Plotter, and is widely used by the RYA practical and shore based instructors. Supplied with Single handed Dividers for the complete navigation kit.
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3 available
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  • London Store - 3 in stock
  • Bristol Store - Out of stock
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£25.99
£25.99

10x32 Mistral WP6 Waterproof R/P Binocular

Accessories for Travel
by Optical Vision
The new, highly specified Helios MISTRAL WP6 roof prism range comprises models over 32mm, 42mm and 50mm objective lens apertures. They are extremely competent instruments for both birdwatching & general observing, and represent truly amazing value. They feature a very stylish, ergonomic, modern top hinge design covered in sleek green rubber armouring. The body is constructed from lightweight but robust poly...
In stock online
Online Stock:
3 available
Available in stores
  • London Store - 3 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£119.95
£119.95

Speed-Time-Distance Calculator (Small)

Miscellaneous
by Blundell Harding
Simple to use slide rule. Calculates the third variable given the other two (distance covered, given speed and elapsed time). Outer sleeve manufactured from high impact plastic.
In stock online
Online Stock:
2 available
Available in stores
  • London Store - 2 in stock
  • Bristol Store - Out of stock
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£7.99
£7.99

10x50ED Mistral WP6 Waterproof R/P Binocular

Accessories for Travel
by Optical Vision
The new, highly specified Helios MISTRAL WP6 roof prism range comprises models over 32mm, 42mm and 50mm objective lens apertures. They are extremely competent instruments for both birdwatching & general observing, and represent truly amazing value. They feature a very stylish, ergonomic, modern top hinge design covered in sleek green rubber armouring. The body is constructed from lightweight but robust poly...
In stock online
Online Stock:
2 available
Available in stores
  • London Store - 2 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£219.95
£219.95

Dr Crabtree's Patent Observatory Magnifier

Accessories for Travel
Believed by some to have been designed in 1804 by the legendary British inventor and polymath Joseph Crabtree, the functional simplicity of his brass-and-glass domed "Observatory" magnifier has never been surpassed or needed modification.
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2 available
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  • London Store - 2 in stock
  • Bristol Store - Out of stock
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£18.99
£18.99

Portland Course Plotter

Stationery
by Blundell Harding
This course plotter is used worldwide by practical and shore based instructors. It features a bright blue directional arrow to prevent accidental reciprocal bearings and the edges are graduated for tide and boat speed.
In stock online
Online Stock:
2 available
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  • London Store - 2 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£14.99
£14.99

Weems & Plath Paralock Plotter (90)

Accessories & Instruments
This compact GPS parallel rule is well-suited for use on small chart tables. The primary purpose of the ParaLock Plotter is to enable the transfer of GPS positions rapidly, easily, and accurately to and from any paper chart. This unique plotter features three unique design concepts: 1) The black locking knob is friction adjustable for fast lat/long transfers. It enables the two rulers to be fixed in any giv...
In stock online
Online Stock:
2 available
Available in stores
  • London Store - 2 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£18.99
£18.99

Weems & Plath 12" Parallel Ruler Brushed Aluminium Arms (140)

Accessories & Instruments
This sturdy 12-inch (30.48cm) parallel ruler with brushed aluminum arms is enscribed with a protractor scale. It is used to plot direction on a nautical chart from any convenient meridian or compass rose. The two straight-edged rulers are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non-moving ruler, you can effectively plot a course.
In stock online
Online Stock:
2 available
Available in stores
  • London Store - 2 in stock
  • Bristol Store - Out of stock
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£14.99
£14.99

Weems & Plath 7" Single Handed Divider (170)

Accessories & Instruments
One Hand Dividers are used to measure the distance between two points on a chart using one hand. To measure a distance on a chart within the span of your dividers, place one divider pin on each point, then move the dividers, maintaining the spread, to the graphic distance scale on your chart or the latitude scale at the side margin.
In stock online
Online Stock:
2 available
Available in stores
  • London Store - 2 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£19.99
£19.99

Weems & Plath Original Bi-Rola Ruler (155)

Accessories & Instruments
The Bi-rola Rule is a rugged plotter that is used by professional navigators because it is quick and easy to use. The patented vertical and horizontal rolling motion simplifies course and plotting calculations.
In stock online
Online Stock:
1 available
Available in stores
  • London Store - 1 in stock
  • Bristol Store - Out of stock
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£65.99
£65.99

Weems & Plath Road Rule - IALA Buoyage (292)

Accessories & Instruments
ROADrule IALA identifies the International Association of Lighthouse Authorities Maritime Buoyage System for Regions A and B, including all types of fixed and floating marks. This simple to use navigation aid shows the actual view of maritime buoyage systems with corresponding chart symbols. It takes a large amount of complex information and makes it easy to understand and quick to refer to with a design th...
In stock online
Online Stock:
1 available
Available in stores
  • London Store - 1 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

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£21.50
£21.50

8x42ED Mistral WP6 Waterproof R/P Binocular

Accessories for Travel
by Optical Vision
The new, highly specified Helios MISTRAL WP6 roof prism range comprises models over 32mm, 42mm and 50mm objective lens apertures. They are extremely competent instruments for both birdwatching & general observing, and represent truly amazing value. They feature a very stylish, ergonomic, modern top hinge design covered in sleek green rubber armouring. The body is constructed from lightweight but robust poly...
In stock online
Online Stock:
1 available
Available in stores
  • London Store - 1 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

Order before 5pm to collect from your chosen store after 1pm the next working day.

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£169.95
£169.95

10x42ED Mistral WP6 Waterproof R/P Binocular

Accessories for Travel
by Optical Vision
The new, highly specified Helios MISTRAL WP6 roof prism range comprises models over 32mm, 42mm and 50mm objective lens apertures. They are extremely competent instruments for both birdwatching & general observing, and represent truly amazing value. They feature a very stylish, ergonomic, modern top hinge design covered in sleek green rubber armouring. The body is constructed from lightweight but robust poly...
In stock online
Online Stock:
1 available
Available in stores
  • London Store - 1 in stock
  • Bristol Store - Out of stock
  • Warehouse - Out of stock

Order before 5pm to collect from your chosen store after 1pm the next working day.

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£174.95
£174.95

Weems & Plath Light Rule - Colregs (190)

Accessories & Instruments
If you have ever been on the water at night and wondered if the marine navigation lights you see are from an approaching or fleeing vessel, or if the vessel is a fishing trawler or super tanker, then LIGHTrule is for you. This simple-to-use vessel identification tool is inexpensive security for night travel and should be an essential part of the equipment found on any boat. LIGHTrule is also an excellent ai...
Out of stock online
Not available in stores
£21.50
£21.50

Sextant in Case

Small Furniture
Made of brass, with wooden case. 15(L) x 15(W) x 8(H) cm. Charming sextant as used by Victorian explorers and surveyors. Intricate and semi-functional, it has all the pieces needed to shoot the sun. A sextant defined latitude. A clock longitude. Defining the angle of Sun and Stars with the horizon was an important way to navigate and survey. A beautiful, intricate instrument with an interesting and ancient ...
Out of stock online
Not available in stores
£110.00
£110.00
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