After selling one of my telescopes last year at an antiques fair (and making a very healthy profit on it, if I do say so myself!), I was able to splurge a bit on another ‘scope – of a particular style which I have, until now, not had the privilege of adding to my collection.

I’ve seen a number of these telescopes over the years, but they were all in absolutely terrible condition. Most of them were covered with dents, scratches, loose or broken lenses…and outrageous price-tags! I don’t know about you, but $650 for a telescope with no glass inside it sounds like a very steep price to pay for what is basically a very nice, polished metal tube covered in leather.

I got this particular ‘scope from my local flea-market and after checking it all over for flaws and damage, decided that it was worth the expense to buy it. It had one or two minor faults, all relating to the leather sheathing, but nothing that some restoration (eventually…if it ever needs it) couldn’t rectify. So, for much less than the nearly $700 that the other telescopes were going for, I decided to buy it.

What is an ‘Officer of the Watch’ Telescope?

With its long, thin profile and single draw-tube, sliding glare-shield and smooth, leather cladding, this telescope is quite different from a lot of the others that you’ll find out ‘in the wild’ as it were. Most antique telescopes that you’ll find out and about are multi-tube telescopes without any type of sliding glare-shield, and they’re usually much smaller, with a closed length of anywhere from four to six to eight inches; some slightly larger ones might be about twelve inches, but not many will be longer than that.

By comparison, an officer-of-the-watch telescope typically measures 18 inches when closed up, stretching out to about two feet when fully extended. Most other telescopes can double or triple their lengths easily when they’re extended, while this particular model does not. Exactly why it was designed this way will be explained later on.

These telescopes are called Officer-of-the-watch/officer-on-watch (‘OOW’) telescopes because they were usually purchased by officers or captains serving in the navy or the merchant marine for use on the ship’s bridge. Such telescopes were either the private property of the officers who carried them, or else were the property of the ship, and were kept on the bridge at all times for use by the crew. Their purpose was to provide a vision-aid close to hand for officers on the bridge in the event of an emergency.

Why are they shaped like they are?

As I said earlier, Officer-of-the-Watch telescopes are long and narrow, with single draw-tubes and sliding glare-shields over their objective lenses. Their unique shape is due to the constraints of their working environments. Since these telescopes were usually kept (and used in) the bridge of a ship at sea, they had to be compact. A shorter, two-foot telescope was lighter, easier to carry and easier to use in the confined space of a ship’s wheelhouse, compared to a more conventional naval telescope (some of which could be three or even four feet long!). Try swinging that around inside a wheelhouse without cracking the helmsman in the head! He won’t thank you for it!

How Old are these Telescopes?

Officer-of-the-watch telescopes date to the early 20th century and appear to have been made exclusively in Britain. They were manufactured starting ca. 1900 up to the middle of the century. and were originally manufactured for the Royal Navy, but their use drifted into regular merchant-marine use as well due to their practicality of design.

So, what is an Officer of the Watch?

In the ship’s crew, an officer of the watch (or ‘officer on watch’) is the officer in charge of watchkeeping. Every officer on the ship, generally from the captain down to the lowest-ranking officer, covers watchkeeping in shifts. Traditionally, a watch was four hours long. During that four-hour shift, an officer stood watch on the bridge. Here, he could oversee the ship’s navigation, the weather, the speed and direction of travel, and could respond swiftly to emergencies. The officer of the watch had to be good at navigation, reading the weather, and at assessing dangerous situations such as storms, reefs, rocks and other hazards. In the absence of the captain (who might be sleeping, working, having dinner or be otherwise engaged), the officer of the watch was in charge of the ship’s immediate handling and navigation.

Typically, the officer of the watch was joined by at least two other sailors – a forward lookout or two, and a junior seaman known as a quartermaster, whose job was usually that of controlling the ship’s direction by manning the helm or the ship’s wheel. Officer-of-the-Watch telescopes were usually mounted on the wheelhouse walls, secured in place by brackets or rings to stop them rolling or sliding around.

In the event of something posing a hazard or threat to the ship (such as an oncoming storm, a coastline, rocks, a lighthouse or other ships), the officer of the watch could use the telescope provided (or one which he himself had purchased) to assess the situation ahead.

Since it could be dangerous to leave the wheelhouse during rough or stormy weather, a slimmer, more compact telescope which could be used easily indoors was preferable to the much longer, thicker, and heavier telescopes usually used at sea. Once the hazard had been identified, the ship could take appropriate action, either changing course, or else ordering the ship to stop or slow down, usually done by operating the engine-order telegraphs on the bridge, to send or ‘ring’ orders down to the engine-room below (each telegraph was equipped with a bell that dinged with each movement of the telegraph-arm so that the engineer could hear the change in orders from the bridge, over the drone of the engines).

What Features do these Telescopes Have?

To begin with, one of the most noticeable features of these telescopes is how thin they are. Typically not more than about three inches wide (if that!). A useful feature, since it would make the telescope easy to grip and hold – even if it’s winter on the Atlantic, and you’re wearing gloves to stop frostbite, but you need to spot an iceberg right ahead!

Another useful feature is the leather, non-slip cladding on the barrel. This was partially done for style purposes, but it also makes the telescope easier to grip with wet, cold hands in an emergency.

The third most noticeable feature that you’ll find on every officer of the watch telescope is the sliding shield at the front. Variously called ‘dew shields’ and ‘glare shields’, their purpose was to keep rain, seawater, spray and sunlight off the main lens (known as the ‘objective lens’). By sliding the shield out ahead of the lens, it prevented the sun’s rays from reflecting off the glass and potentially blinding the user, and it also kept the glass clear of raindrops or sea-spray in heavy weather, and was a popular feature on maritime telescopes.

Are These Types of Telescopes Common?

They are fairly common, yes. I’ve seen about four or five before I eventually bought this one. Most of them were in terrible, unusable condition due to their age and the lives they led, but you can find working examples for not too much money, if you’re patient. They’re typically made of brass (which may or may not be nickel-plated. Mine is plated) and are typically 18 inches long, extending out to about 24 inches in open length. Living in Australia, a country which until the late 20th century was accessible only by ship, finding maritime antiques isn’t that difficult. Barometers, ship’s clocks, telescopes, binoculars and sextants are pretty common here.

If you’re thinking of buying an antique telescope, then you need to check for things like dents, cracks, scratches and warpage. Damaged lenses can be hard to replace, and so should be avoided. Dents on the barrel (but even moreso on the draw-tubes) should be avoided as much as possible. Dents will misshape the profile of the tube and make it harder to draw in and out of the telescope. Dents on the draw-tubes will cause the telescope to jam.

If you have the right tools and enough patience, you can press and roll out (or at least reduce) stubborn dents, but you should be careful not to warp the shape of the tube. I was able to use a heavy, wooden rolling pin to roll out the dent inside the glare-shield on one of my favourite telescopes with great success. It wasn’t entirely eliminated, but it was reduced significantly – enough that it was no longer causing the shield to jam every time I opened or closed it.

You should check that the sliding eyepiece shutter over the eyepiece lens is in good condition. If loose, they can be tightened by screwing them back into place. If they’re too tight, loosen the screw slightly. If the screw works itself loose repeatedly after tightening, every time you open and close the shutter, then a DROP of oil on the shutter will provide enough lubrication to allow the shutter to slide open and shut, without the friction that would also loosen the screw.

Simply tighten the screw as much as possible, apply a dab of oil and work it in. I’ve had to do that with a couple of telescopes in the past and provided the oil doesn’t dry out completely (unlikely), then it’s a very effective little fix.

Last but not least, you should check the telescope for its lens cap. Not all telescopes were designed to have lens-caps, but most did. This one does not have a cap over the objective lens, and never did. Instead it has a leather hood that drops over it, but most telescopes are meant to have them, to protect the objective lens from dust, water and damage. That said, it’s rather common to buy antique telescopes without their lens-caps included.

Anyway, that wraps up my posting about my rather different and interesting addition to my collection. For more information about antique telescopes, I can strongly recommend the blog of Nicholas Denbow, at The Telescope Collector. His posts are both entertaining, informative and fun to read!