Skip to main content
Become a member
Donate
Shop
Venue hire
Search
Royal Museums Greenwich
Main navigation
Menu
Royal Museums Greenwich
Search
Close
Plan your visit
Back
Plan your visit
Tickets and prices
Getting here
Accessibility
Family visits
Group visits
School visits
Cutty Sark
Cutty Sark
Open daily 10am - 5pm
Last entry 4.15pm
Adult: £22 | Child: £11
Members go free
Free
National Maritime Museum
National Maritime Museum
Open daily 10am-5pm
Last entry 4.15pm
Free entry
Booking recommended
Free
Queen's House
Queen's House
Open daily 10am - 5pm
Last entry 4.15pm
Free entry
Booking recommended
Royal Observatory
Royal Observatory
Open daily 10am-5pm
Last entry 4.15pm
Adult: £24 | Child: £12
Members go free
What's on
Back
What's on
Planetarium shows
Exhibitions
For families
Member events
Talks and tours
Royal Observatory
Talks and tours
Annie Maunder: life, work, legacy
A panel discussion led by curator of the Royal Observatory Dr. Louise Devoy celebrating pioneering solar astronomer and astrophotographer Annie Maunder
National Maritime Museum
Exhibitions
Pirates
Explore the myth, discover the truth: Pirates at the National Maritime Museum is now open
Queen's House
Talks and tours
Salons in the Queen's House
See the Queen’s House and its collections in a new light with this series of free lunchtime talks exploring art, architecture, history and our contemporary culture
Stories
Back
Stories
Art at the Queen's House
Our Ocean, Our Planet
Guide to the night sky
Museum blog
The pirate hunter's cup
What does a carved coconut shell have to do with one of the most deadly pirates in history? Dr Robert Blyth follows the story of Bartholomew Roberts, and the 'forgotten pirate hunter' Captain Chaloner Ogle
The art of piracy: imagining the world of Zheng Yi Sao
A series of illustrations by Livia Giorgina Carpineto brings the world of notorious pirate queen Zheng Yi Sao to life
Night Sky Highlights - April 2025
Discover what to see in the night sky this April, from the Lyrid meteor shower to bright inner planets, and more.
Collections
Back
Collections
Conservation
Research
Donating items to our collection
Collections Online
Search our online database and explore our objects, paintings, archives and library collections from home
The Prince Philip Maritime Collections Centre
Come behind the scenes at our state-of-the-art conservation studio
Caird Library
Visit the world's largest maritime library and archive collection at the National Maritime Museum
Learn
Back
Learn
School trips and workshops
Self-guided school visits
Online resources and activities
Booking an on-site schools session
Booking a digital schools session
Young people and youth groups
Support us
Back
Support us
Become a member
Donate
Corporate partnerships
Become a patron
Leave a legacy
Commemoration and celebration
Cutty Sark
National Maritime Museum
Queen's House
Royal Observatory
Become a member
Donate
Shop
Venue hire
Search
Beta
Back to All Results
Explore our collection
Objects
Library
Archive
Search our collection
Filters…
Search
Item Category
Select…
Item Category
Item Category
Astronomical and navigational instruments
Astronomical and navigational instruments
Show all
3. Astronomy demonstrated: instruments and models
Astrolabes and quadrants
Celestial navigation
Charting instruments
Compasses
Course, speed and distance indicators
Electronic navigation
Exploring the Arctic
Globes
Globes and globe gores
Herschel family
Meteorological instruments
Optical equipment
Popular Astronomy
Sundials
Telescopes
Telescopes at the Royal Observatory Greenwich
Telescopes Online Gallery
The Herschels as experimenters
The Herschels as instrument makers
The many faces of the telescope
Apply Filter
Apply Filter
Type
1 selected
Type
Type
Octant with Artificial Horizon
Reflecting Circle
Reflecting Circle box
Reflecting half-circle
Repeating circle
surveying & navigational t&e: circle, reflecting
Apply Filter
Materials
Select…
Materials
Materials
brass
glass
inorganic: glass
metal
metal: brass
metal: gold
metal: silver
wood
Apply Filter
Display Location
Select…
Display Location
Display Location
Not on display
Apply Filter
Creator
Select…
Creator
Creator
Berge, Matthew
Dollond & Aitchison
Heather, William
Hughes, Henry
Jecker
Jecker, Francois Antoine
Luttig, C
Magellan, Jean Hyacinthe de
Pistor & Martin
Pistor & Martins
Ramsden, Jesse
Spencer Browning & Rust
Troughton
Troughton & Simms
Unknown
Apply Filter
Places
Select…
Places
Places
Berlin
London
Paris
Unknown
Apply Filter
People
Select…
People
People
Henry Hughes & Son Limited
Hughes, Henry (Repairer for re-sale)
Apply Filter
Century
Select…
Century
Century
18th
19th
20th
Apply Filter
Date Range
Select…
Date Range
Date From
Select...
1787
1790
1800
1803
1805
1810
1820
1825
1830
1850
1860
1863
1885
1898
Date To
Select...
1787
1790
1800
1803
1805
1810
1820
1825
1830
1850
1863
1880
1898
1905
Apply Filter
Show only:
With images
Applied Filters
Reflecting Circle
Clear all
showing 17 objects results
Sort by
Relevance
Object title/name
Object title/name (desc)
Finding reference
Finding reference (desc)
Borda circle (Repeating circle)
Borda circle (Repeating circle)
Repeating circle
Reflecting Circle
Reflecting Circle
Captn Beatson's Patent Altimeter (Octant with Artificial Horizon)
Repeating circle
Reflecting Circle
Reflecting Circle
Borda circle (Repeating circle)
Reflecting Circle
Reflecting Circle box
Reflecting Circle
Reflecting half-circle
Repeating circle
Reflecting Circle
Reflecting Circle
Loading filters
Royal Museums Greenwich
Close
Search
Want to search our collection? Search here.
Back To Top