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Pre-owned Pre-owned Pre-owned. The '5' ring also gives excellent COL annular lighting with a Zeiss 16x objective and useful when scanning pond life samples. I'm uncertain if the same match applies to the Universal condenser with iris supplied with other Leitz stands of this era, although this example does use the standard condenser top optics, in this case the 'ACHR NA0. Component interchange across Leitz range? Modularity is often a key selling point of this type of stand, but without access to any brochures or system diagrams I'm uncertain what range of accessories were specific to the Diaplan and Aristoplan?
The condenser dovetail mount is I'm uncertain, whether other than the lack of iris, the optics of condensers for other Leitz models of this era will also work on the Diaplan. Comments welcomed. Note added Jan. Neither are the interchangeable top elements. Note added Aug. The stage mountings seem the same as those on a Dialux formerly owned, but don't think the limb would be deep enough on the smaller stands to accept this rotating stage.
Although the more advanced Leitz W halogen lamphouse for transmitted work may physically fit, given the large diameter field optics, aperture iris and permanent diffuser in base, I'm not sure if it would work correctly. General comments In use it is a competent, sturdy and workmanlike stand very much like the other models of this era. The aperture iris in base seems neither a particular benefit nor hindrance to this user. The mechanical stage with rotation is perhaps the feature that most appealed.
It's pricing, as this one, can be comparable to lesser specced more popular models, perhaps because of its unfamiliarity, unusual aperture iris design and that resources are hard to find if not supplied with the microscope. Comments to the author David Walker are welcomed. Cautionary tale to potential buyers of a Diaplan: Added October On receipt of my example from a mainland Europe dealer I live in UK , the stage disengaged and dropped off the coarse focus rack near bottom of the focus travel.
After internal inspection, this was caused by stripped teeth on the coarse rack. Discussions with another owner with a similar problem suggests that mine was not a one-off example and advise potential buyers to ask the seller if the coarse focus is smooth throughout its full travel range. If the rack is damaged, sourcing a new one or finding a service agent who has a spare to repair it, may be time intensive and costly.
The author's Leitz Diaplan damaged focus rack shown mounted on its support; ball bearings run in channels on both sides of this mount. The straight cut teeth may make it easier to manufacture if need to seek a maker of one.
By inspection the rack and pinion are a loose mesh, it seems to be the weight of the stage acting on top of one or two teeth that provides the focus feel. The rack affects a compass so presumably a steel; I'm not a metallurgist but to my eye the metal structure seems quite porous.
The very heavy stage and condenser may put too much stress on the few teeth on the rack supporting it if the stand is dropped in transit. To minimise this, it is worth asking the seller to remove the condenser and to coarse focus fully down onto a stiff foam pad underneath the focus block.
To be totally safe the stage can be removed to take all weight off the rack, it's held by three Allen nuts, although to remove the centre nut the condenser support also has to be removed; possibly too much to ask for many sellers. Also there may be a thin shim under one nut of the stage, which must be noted and retained. The dealer I bought mine off managed to source what may have been the last spare focus rack in Europe.
To avoid high overseas shipping I installed it myself but it was tricky; the ball bearings on the focus slide are not captive, the optical axis has to be carefully reestablished and requires care in choice of grease and reinstallation of mechanism to restore the original fine focus feel.
A US owner did not manage to source a rack for his damaged Diaplan and had to have two spares made up at some expense ca. Thank you to the fellow Diaplan owner for sharing his experiences; combined with mine shared above, hopefully this may avoid further damage to these splendid stands. Leica Microsystems GmbH is a manufacturer of superb optical equipment. Leica Microsystems is a successor company of Ernst Leitz that was founded in Germany in This is a very rare Leitz product.
It is an ergonomic head that allows angle of the eyetubes to be adjusted through about 30 degrees to suit the height of the individual. Eyepieces not included. Condition excellent. Standard RMS screw thread and corrected for mm tube length. Complete with original case. Before the digital world with its cameras and projection devices arrived, it was somewhat unique to be able to share microscope images with others.
This Leitz projection attachment was designed to do just that. It clamped over the eyepiece of a microscope and its prism deflected the image that the microscope saw to a screen. A part of our microscope history. A good vintage Leitz objective with original objective case.
RMS screw thread and corrected for mm tube length. The Diaplan was the flagship model during the heyday of the Leitz brand. These are now well sought after and this particular model is in very good condition indeed.
This is a heavy weight microscope commanding a large foot print. The five position turret has plan x2. Double vernier scale and coaxial movement controls. Both the aperture and filed iris diaphragm controls are wheels embedded in the left hand side of the base. The coaxial coarse and fine focus controls also have a maximum distance control mechanism below the focus controls on the left of the stand. The external light box houses a watt halogen light source with full bulb positioning control and filter slots.
The rheostat control is on the right side of the base towards the back and at the front of the base is a volt meter display. All in all a fine microscope made the way that microscopes should be. Mounted on a plate that would seat on top of the stage and has two slide clips. Original lined case. Probably dating from or so. Excellent condition for its age.
A rarely found accessory in the used market. Four position phase rings with a bright field option. Iris diaphragm and phase rind adjustment controls. Condition very good. Leitz manufactured a series of Laborlux instruments with the differences between models often quite relatively small because they all largely had the same optical objectives and eyepieces. This good example is from the K range. We have sold many used Leitz microscopes over the years and they all share one common property - excellent build and optical quality.
This microscope has all the Laborlux features. Mechanical stage with drop down controls. Flip top condenser with lateral adjustment. Kohler illumination with a 6v 20watt halogen light source with brightness control. As would be expected the base of the microscope shows some loss of paint at the edges caused by watches and bracelets over the years and the stage shows the evidence of slides moving around.
A quality microscope that becomes affordable simply because it is getting on a bit! The quality of Leitz microscopes speaks for itself, but from time to time we come across models that have been owned from new by private individuals and have been looked after with care and used with knowledge, This SM- LUX is one of these, all original and in excellent condition.
Trinocular head with x10 periplan eyepieces. Four position objective turret with mm x4, x10, x40 and x objectives.
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