Here is a really good versatile and very usable example of a compact retro Cooke Troughton & Simms (CTS) monocular metallurgical reflected light microscope in black finish with chrome details. It carries CTS serial number M109179, which will date from the late 1950s or early 1960s.
The condition is really excellent and everything works as it should giving great options for viewing uncovered opaque/solid specimens such as the silicon chip you can see I've been examining in some of the listing photos. I've included a photo that I took through the eyepiece just using my iPhone so it's not the best of images and you can make out some of the trackways on the broken chip surface at 360x magnification. The view through the eyepiece of the silicon chip surface features is pin-sharp at this magnification - I was using the CTS 40x MET lens and 6x eyepiece.The CTS M1000 model range was first introduced by CTS in the late 1940s - the CTS microscope range was considered to be amongst the top optical instruments of their day and were therefore used by some leading scientists of the time. This metallurgical example of the M1000 series is in such good condition it looks to have hardly ever been used with nice bright chrome details and near-perfect black enamel, with no noticeable signs of wear. I've lubricated the fine focus mechanism which was a little sticky and it now moves nice and freely. Turning to the main technical details of this vintage metallurgical microscope, we have. A monocular eyepiece unit fitted with a period CTS 6x magnification eyepiece and angled eyepiece unit that also imparts a +1.5x magnification, therefore increasing the effective magnification at the eyepiece to 9x magnification. There's also an additional C. Baker 10x eyepiece that scales up to 15x magnification. A coarse focus system that moves the main optical tube in a vertical plane, with a nice smooth action through the twin-sided chrome thumb-wheels - travel and focus are both good. Note that the microscope upper frame on this model is designed to tilt for inclined viewing and it holds in position perfectly as it should.
Fine focus adjustment essentially works via an internal cam system when smaller inputs are made via the twin chromed fine focus thumb-wheels, which also have a nice smooth action. There are three CTS & C. Baker metallurgical objective lenses giving a usable selection of magnification, as follows: - C. Baker 2/3rds inch metallurgical - 10x magnification - CTS 4mm metallurgical - 40x magnification - C. Baker 1/6th inch metallurgical - 40x magnification The effective overall magnification therefore ranges from 90x to 600x without the need to use oil immersion techniques.
Baker metallurgical lenses require the use of a parfocal adapter in order to be used with this instrument and you can see that I have been using a 15mm parfocal extender in matt black, which is in use on the turret - this item will be supplied with the instrument. There's a CTS vertical illuminator fitted to the side of the main optical tube. This is in good working condition with internal prism, irises and a thumb-screw that operates an internal rotating reflector to direct the light from the vertical illuminator down onto the sample under study on the stage. The vertical illuminator is fitted with a CTS bulb-carrier with a 6V 4W screw-fit bulb.This is in turn powered by a 6V transformer that just plugs into a conventional wall socket. There is also a torpedo on/off switch fitted for extra conveniece as well as a couple of spare bulbs in the case. The specimen stage is a standard CTS ebonite stage with a set of chrome-plated specimen clips that are perfect for holding samples steady. In view of the angled eyepiece attachment, the stage can usually be kept horizontal during viewing sessions.
The stage also has vertical adjustment via a rack and pinion system with thumb-wheel control on both sides, this allows different thicknesses of sample to be accommodated for study on the stage. There's also a good solid CTS case in hardwood with carry-handle, internal lens rack and also a working lock with key. The overall condition of this compact and well equipped CTS monocular metallurgical microscope is really exceptionally good with no maintenance or wear issues. In summary, this is a well-equipped vintage metallurgical microscope, from well-known British optical firm CTS and an instrument with a great degree of flexibility in that you can use incident light techniques to view solid/opaque samples of different sizes and thicknesses.It's supplied together with some usable lenses which overall makes a rather good versatile metallurgical microscopy set-up at an attractive price point. It's also essentially usable straight out of the box, with a bit of time invested in understanding how best to use its flexible features and controls to optimum effect on solid/opaque samples. This microscope equipment will be partially dismantled, very well packaged for transport and dispatched by insured courier upon receipt of cleared funds. Thanks for looking - please check out my other listings if you get a chance.
The item "Vintage Cooke Troughton & Simms M1000 Metallurgical Microscope, c1960, Cased" is in sale since Friday, July 23, 2021. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "arcboutant" and is located in Glasgow.
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