Navigation Instruments

Electronic charts are wonderful until the power fails. A paper chart and a set of proper chart tools never do. This collection brings together navigation instruments from Weems & Plath, the Annapolis maker that has served navigators since 1928.

Choose from brass dividers and pencil compasses, parallel rules and rolling plotters, quick-reference slide rules for lights and buoyage, chart weights and magnifiers, complete navigation sets and red-light chart lamps for night passages.

Showing 1-12 of 32 item(s)

Weems & Plath Brass Compass Chart Weight - 76 mm

Chart Weights & Magnifiers

Weems & Plath Brass Compass Chart Weight - 76 mm

Weems & Plath

PLA0003

€71.54

A forged brass ring around a working liquid-filled compass: chart weight at sea, handsome paperweight ashore.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Weems & Plath Nickel-Plated Compass Chart Weight - 76 mm

Chart Weights & Magnifiers

Weems & Plath Nickel-Plated Compass Chart Weight - 76 mm

Weems & Plath

PLA0003D

€71.54

The compass chart weight in shining nickel, for those who prefer a silver tone.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Weems & Plath Brass Magnifier Chart Weight 5x - 76 mm

Chart Weights & Magnifiers

Weems & Plath Brass Magnifier Chart Weight 5x - 76 mm

Weems & Plath

PLA0003C

€77.51

A brass chart weight with a 5x lens: holds the chart flat and brings tiny soundings into focus.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Weems & Plath Crystal Magnifier 4x with Compass Rose - 76 mm

Chart Weights & Magnifiers

Weems & Plath Crystal Magnifier 4x with Compass Rose - 76 mm

Weems & Plath

PLA0003E

€65.57

An optical-grade crystal magnifier with compass rose: clearer and more durable than acrylic.

Weems & Plath Grande View Magnifier 6x with Compass Rose - 102 mm

Chart Weights & Magnifiers

Weems & Plath Grande View Magnifier 6x with Compass Rose - 102 mm

Weems & Plath

PLA0003F

€119.26

A large 6x magnifier that gathers light from all around: no focusing, no squinting.

Dividers & Compasses

Weems & Plath One-Hand Divider Brass - 7 in

Weems & Plath

PLA0011

€32.16

The classic 7-inch brass one-hand divider, opened and closed with a single hand while you work the chart.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Dividers & Compasses

Weems & Plath One-Hand Divider Brass - 8 in

Weems & Plath

PLA0012

€35.74

The traditional brass one-hand divider in the longer 8-inch size, spanning greater distances in one move.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Dividers & Compasses

Weems & Plath Straight Pattern Divider Brass - 8 in

Weems & Plath

PLA0014

€34.55

A straight brass divider with hand-sharpened stainless points and tension you can set yourself.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Dividers & Compasses

Weems & Plath Ten Point Divider Stainless - 6 in

Weems & Plath

PLA0094

€238.60

An unusual stainless divider whose eleven numbered points split any span into up to ten equal parts at once.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Dividers & Compasses

Weems & Plath Professional Brass Pencil Compass - 8¼ in

Weems & Plath

PLA0101

€71.54

An extra-long solid brass pencil compass that draws circles up to 24 inches on large charts.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Parallel Rules & Plotters

Weems & Plath Parallel Rule Aluminium Arms - 18 in

Weems & Plath

PLA0017

€33.35

An 18-inch parallel rule with protractor scale, the essential tool for laying off courses.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

Parallel Rules & Plotters

Weems & Plath Deluxe Parallel Rule Brass Arms - 15 in

Weems & Plath

PLA0070

€42.90

A 15-inch parallel rule with solid brass arms and handles: traditional elegance for a classic tool.Limited lifetime warranty from Weems & Plath on the movement, for as long as you own the instrument. View the warranty terms (PDF)

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