“Officer Of the Watch” (OOW) telescopes

DSC00221 all ten

There are a lot of these about, by definition. Go onto any warship and there are several of this style of telescope available for use – a prime example is behind the bridge on the Royal yacht “Britannia”, now moored up near Edinburgh, where the hooks/hoops hold about four of them in place. A few years ago I consciously bought some spares for this style, by buying old battered ones on Ebay. These, plus some better ones, are shown here – ten in total – and the mods illustrate how the basic design can be repaired with old conduit or whatever, as long as the lenses are still intact. One of these examples has been moulded over, such that it cannot be dismantled, but currently it still works!

Telescopes from Cooke and Coombes

Telescopes from Cooke and Coombes

Actually the diameters are not consistent between all these models, so lens swapping is not that simple. The manufacturers shown here are Ross, in many different eras, T. Cooke, Hammersley, and one that looks like a reseller, J. Coombes of Devonport (which latter has a interesting story, being engraved as owned by R D Graham). Actually J Coombes is quoted as an optical and instrument supplier to the Admiralty from the mid 19th Century onwards, so possible he did build the telescope. The quantities in which these were produced are illustrated by the serial numbers on some of the units. For example the T. Cooke models are numbers 5226, and then 6671, labelled on the sunshade, eyepiece, first draw etc.

DSC00222 RossThen the four Ross units show the age progression, starting with one unit engraved as made by A. Rofs of London, in old script, with the “f” typical of late 18th or early 19th Century writing. This one has two crests on the end of the barrel, showing that it was presented by GRJ, with a king and crown image, to WBG, with a dove of peace image. A later unit is engraved in script, with a serial number 29155, and has the name Lieut Washer RNR engraved on the end of the barrel. This one is additionally engraved as sold by Seagrove and Co, of Portsea. There is then the moulded together unit engraved with ROSS in capital letters, and this is given serial number 31334: so there seem to have been a lot of these produced! 31334 has another much more interesting story, which will be recorded separately, as it was owned by Lt Cdr Francis Edmund Blechynden Haselfoot RN, active during WW1. I have actually forgotten to mention the other Ross unit here, bought for spares with no objective lens, although there is a lens somehow mounted half way along the main barrel! The rest of this barrel is really damaged. This is engraved as Ross London in script, with no serial number, on the eyepiece draw, so maybe is the second oldest. But actually the bezel has a name engraved on it, which has been almost totally wiped out with polishing. Again the name has a symbol above, maybe a tree branch around a bird again, similar to the one quoted above. After polishing and study it looks like the two words underneath could be Murray Gladstone. Andrew Ross worked mainly in Clerkenwell from 1830-1859: Ross & Co was used as the company name when they moved to Piccadilly, between 1839-1842. After 1859 Thomas Ross continued the business.

There are some people who have access to the records of these serial numbers, as used by Cooke and Ross, but as I don’t know how to see the records myself, any comment would be interesting! [Subsequently a correspondent – Richard Jeffries – helping his daughter research a family owned 1919 issued H Hughes & Son scope, located a book “The Officer of the Watch Telescope, 100 Years of Naval History” by Brian Buckman (2012). This book mentions that Ross serial numbers had reached 86,994 by 1940. Numbering started in 1842. Additionally NPL (the National Physical Laboratory, known in 1918 as the National Testing Laboratory) in their annual report for 1918, says they tested or checked for operation 11,133 scopes in 1916-17, 13,306 in 1917-18, and 7,967 in the first six months of the 1918-19 FY]


DSC00224 objectives 6The typical design is for a 17” or 18” long barrel, with a 6” single draw to the eyepiece and approx a 1.5” objective lens. Typically the sunshade pulls out around 3”. The barrel is usually leather covered, but when that wears out it would get covered with whatever is available. One of the examples pictured seems to be half covered in leather, and half brass polished.

These scopes are easy to focus, easy to use, short enough not to hit anyone else or get in the way of colleagues on a small bridge, give a reasonable magnification, and are fit for purpose – ie use by the Officer of the Watch. Most of them seem to have been personalised, so maybe were purchased by the Officers themselves.

Who owned these?

OOW telescopes were mainly owned and used by naval personnel, on board ships in the Royal Navy, right through up to almost the present day. Probably modern binoculars started to take over from around the 1960s. But lets see what we know about these ten units:

* R D Graham was a single handed yachtsman sailing the Atlantic in the 1930s. See a later story.

* Lieut Washer was in the RNR, Royal Naval Reserve, presumably in WW1: there is a Lt George Edward Washer from NZ (Dunedin) quoted in the RNR war records for WW1, but no further info has been found. He was demobbed in 1919

* Lt Cdr Francis Edmund Blechynden Haselfoot RN commanded a ship in the North Sea in WW1. See a later story.

* The Cooke telescope 6671 was owned by Acting Lieutenant C Wright.

So these are all naval, or at least, associated with use at sea. There are two more that bear markings, and are interesting.

The “A Rofs” telescope

DSC00234aDSC00233aThe telescope dates from 1830-1840 let us say. The inscription on the bezel says GRJ to WBG. With a GRJ monogram, plus the image above of a an apparent monarch in ermine and with a crown, you think of King George V and VI, who actually used GRI, for George Rex Imperator, ie Emperor of India. But George IV, who died in 1830, was not the Emperor of India, and William IV followed him. But then this crown, is maybe not a crown, but some form of shrub or bush! Above the WBG there is an image of a bird, with relatively long legs, looking like a racing pigeon: it could even be a pheasant. In its beak it is holding what might be described as an olive branch: a short branch, or twig. [Editor’s note: For those that might ask, William Ewart Gladstone, the British Prime Minister was born in 1809 and died in 1898: but his initials were WEG]

The “Ross” telescope

DSC00229There are some parallels to the one above, with this further Ross telescope. We assume it is later than the one quoted above. It was bought for spares, with a barrel that is badly squashed and bashed about. But only in writing this have I noticed the engraving on the bezel. This is almost totally worn away, from frequent polishing, but the wording underneath has eventually been deciphered as Murray Gladstone. Above this name there is an image framed in an olive branch almost making a total frame (from 7pm to 5pm on a clock face) around what could be a bird, but this time on a mound or mountain. This is very indistinct. (Having taken the photo shown on the left, and studied it, the image could be of a woman in a dress – the skirts making the ‘mountain’ – or even an angel with wings behind).

Now I did not know about Murray Gladstone before reading the name on this telescope. Google advises that he was, in fact, the first cousin of the British PM William E Gladstone, and he built a country mansion near Penmaenmawr in Wales, according to the Penmaenmawr Historical Society (thanks to David Bathers and Dennis Roberts). It cost him what would be £1m in today’s money: the house is today called Noddfa, which means a place of refuge and peace, but then was called Tan y Foel.

Murray Gladstone was a Manchester businessman who made his fortune in the Anglo-Indian textile trade. Tan y Foel was built as a country home with tennis courts, a nearby golf course and elegant gardens overlooking Liverpool Bay. He died tragically on the beach on Monday night the 23 August 1875. He allegedly suffocated in the shallow water after slipping off the rocks. It is alleged he had a few enemies in the locality, so maybe this is another mystery on the shores of Penmaenmawr: did he fall or was he killed?

The very damaged and welded barrel of Murray Gladstone's telescope

The very damaged and welded barrel of Murray Gladstone’s telescope

[Editor’s note: Obviously one has to ask, was he perhaps using the telescope at the time? Did anyone think of this? Is that perchance how it, the telescope, became so bashed about, with him dropping it so carelessly on the rocks maybe? Was the guy who pushed him a robber who just wanted the telescope? Who put the telescope on Ebay anyway? But maybe it would not have been them, they would not have been around 140 years ago. I don’t think I kept a record of that anyway….]

It would have been a real coincidence had the A.Rofs telescope quoted first actually have been given to W.E.Gladstone!

What are OOW telescopes worth?

DSC00227 all 7 closeIt all depends on how much action they have seen, in more ways than one. If one has seen a lot of action, been dropped on the rocks or in the sea, or blown to pieces, it is not worth a lot. If it is in perfect condition, and works, and has no name, it will be worth £120-150. If it has a past owner that is recorded, maybe via an engraved owner’s name, and has possibly been associated with past events, it is worth more: and T. Cooke versions are better quality than the others. If you actually can find out what the owner did, who he was, and maybe whether the telescope was associated with his activities, then it is worth much more still, maybe £500 plus. Sadly I cannot see the Ross telescope from Murray Gladstone ever being worth a premium, and it will never work again: but it only cost me £10, plus postage. One of the eyepiece lenses is already in use on a T. Cooke model, serial 5226, one of the others quoted above!

17 comments on ““Officer Of the Watch” (OOW) telescopes

  1. Interesting background – thank you
    Are you able to provide a provenance of a Ross London telescope Pattern 373 No. 82239?

    I hope so!

    • Thank you! But I regret I have not got that data about Ross telescopes, although I know it exists, as someone quoted it to me once, but would not respond to tell me where he saw the ledger. If anyone has access to it, please let us all know, its not on the Internet as yet – but that is where it should be….Nick

    • The OOW book by Brian Buckman (2012) suggests that a Ross 1940 scope had s/n 86994. This had the Crow’s foot, and the Ross marking is engraved inside a border. If this is an accurate date, and it bears the crow’s foot arrow mark, yours would date to 1940. This would be confirmed by a picture of the engraved name and other marks.

  2. I am restoring my OOW telescope, unfortunately one of the lenses requires replacement and I would be grateful to know if you have any spare for an appropriate fee.

  3. I’m afraid you have the standard problem with most scopes of this style, however old they are! I have a lot of bodies in a similar state to what I can see on the photo you sent, its not that easy to interchange the lenses. I have one on my desk currently, dating from 1790, a wooden body Dollond, lacking the whole objective lens assembly and brass holder – there was a brass fitting (no lens) on ebay, but it sold for £120! Very rare.

    First I must say I’ve never seen one exactly like yours, it looks more like a shore battery or army scope than an OOW naval one. I say that because of the thick leather covering even on the sunshade, and the digits on the knurled ring: I have never quite worked out what the digits might represent, unless there’s a graticule somewhere in the image? to give the viewer a measure of the angle between target and where the shot lands? But why have a numbered adjustment? I don’t know. It is likely made by Ottway of Ealing, WW1 or after.

    Mostly these scopes have four lenses in the draw tube, ie the eyepiece tube, and at the far end of the barrel a fifth, an objective lens “pair”. This is a pair as it is two lenses in one holder, nestled together. These reduce the chromatic aberration, using crown/flint glass. Convex lens is the one that always breaks, ie the lens that looks like (). The other one is flat /concave, )(, and is stronger. In your case, with a cracked lens as one of the elements of the pair, presumably you have managed to unscrew that lens holder (good) but can you unscrew the whole holder to get the glass out? Or is the brass peened around the glass to hold it? Unfortunately this was the cheapest method of constructing the unit, and it takes a lot to undo.

    I would try hard to dismantle this pair, clean both lenses (to remove any glass splinters), reposition together (the right faces together) and if necessary use some glue to hold the cracked lens two parts in position. If you get it right you will not see the join. But don’t get glue between the lenses! Its better without glue, just mechanical pressure. If there is space wrap the edges with a strip of masking tape / sellotape to hold them.

    If that does not work, you need to measure the lens OD, ie the OD of the glass, and the length from the lens mounting point to the closest eyepiece lens (with the scope fully extended), take off 10mm, and look for another lens pair about that OD size and focal length. I would need those dimensions to see if I have anything, but I can’t even think of any spares of that sort at the moment. This is why I often end up buying old damaged telescopes to see what spares can be found on them. Usually I get a good body that deserves repairing, but with some lenses missing. But at least the OOW design is fairly standard.

  4. I have a telescope similar to this but is engravet Thomas Jones 62Charing Crofs not Charing Cross does anyone knowif this is an old name for Charing Cross and if so would this help date the telescope ?

    • Your info suggests something totally different. Your telescope is a lot rarer than an OOW scope, which was really only established in the late 1800s, or even early 1900s, for WW1 use. Charing Crofs is the written version of Charing Cross from the C18 until the early C19, Thomas Jones (the first) was a well respected maker working from 1806 to 1860, but he was at 62 Charing Cross from 1816 to 1850. With the f in his address your scope would date from 1816-1830 maybe.
      Send some photos, plus dimensions like length and diam and I’ll be able to say more.

  5. Sat with a telescope most closely resembling the scope on the far right in the first image on this page. However it only bears the engraving Ross, London, No.28226. Any clue what age range this would be from?

  6. I purchased one of these about two weeks ago, after chasing one for…oh…two years? I’ve heard them called OOW telescopes before, but how exactly did they get this name? Was it an official ‘title’ or was it just what collectors and officers called them out of habit? They’re beautiful, either way. Mine is a 1910s H. Hughes & Son.

  7. Hi Shahan
    Delighted to hear that you have bought your first telescope – it took me several years to get one too, but that was before Ebay appeared, in the 90s!
    Hughes is a good maker.
    I think the name came from the Royal Navy: what impressed me most was a visit on board Britannia, the old Royal yacht, where the bridge had about 4/5 sets of hooks in an entrance doorway, where there were several telescopes ready for use belonging to the officers on the bridge in shifts.
    There’s also a good summary book about OOW scopes: I reckon the name came from a specification for a style of telescope for use by Officers of the Royal Navy, in around 1900, but I need to find my copy of the book to see if it specifies it…. I’ll look for it before posting this on the website.

  8. I have had a Ross London telescope number 33244 which I inherited from my grandfather via my father so it’s been in the family since at least 1900. Do you know where I can find the model number so I can trace its history?

    • Hi Tony: No, I still have no knowledge of the official serial number book for the Ross telescopes, which I believe exists – or at least for a defined period of their production.
      The book quoted above, which I have yet to find, quotes serial numbers for maybe half a dozen, with dates of production – even if estimated.
      Even that will not enable you to trace its history! Its hard work, the telescopes don;t have a record of what they do! Rgds Nick

  9. Hi I wonder if you could help? I have a H Hughes and son OOW telescope in excellent condition – including all optics and the leather. Do you know what one of these would be worth? Many thanks, Andrew

  10. Hi..I see the posts here have gone a bit quiet- are you still in action? Would you be willing to help me identify a WW1 OOW scope?

    • Hi, I’ve recently bought a Telescope by Ross, can only just see it due to over enthusiastic brass polishing 🥴 it’s got a crow foot marking, the leather cover is too far gone to be restitched but the end lense cover is ok, the number on the brass by the eye end is 772, any rough idea of approximate year of manufacture? I’m using it for my Long Range Desert Group Display, as they would use telescopes now & then.

      Thanks for this article

  11. I have a T Cooke and sons telescope, with Provenance for a commander Robert McHardy no 8500 16, engraved. Recently came into my possession and would like to know more. Can you help? I can send pictures if you are interested! Please email

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