This auxiliary lens fits the Unitron series M stereo microscope objectives. The inside diameter of the mount is XXX mm. It appears that the mount may be missing an internal clamp ring. There is a shallow recess where such a ring might have been held captive (these rings are typically used to preserve the finish of the objective by protecting it from direct contact with the ends of the clamping screws). The auxiliary lens does mount very securely, even without this ring.

The glass itself is in virtually perfect condition. I could not see any flaws in the finish on either outer surface, and the cement layer shows no voids. The black anodize ring does show a bit of fading. This lens will halve the magnification indicated on the microscope while greatly increasing the working distance.

Photo set 1413
***MPN 0.5x
***OEM Unitron
***SKU*** 21442

This is a collection of parts from a Reichert Binolux lamphouse system from a Zetopan research microscope. The Binolux lamphouse was also used with a different mounting system on both the MeF-1 and MeF-2 inverted metallographs. The Binolux consists of two lamphouses – a smaller low voltage tungsten or tungsten-halogen for visual observations in transmitted and incident light, and a larger lamphouse capable of housing either a 150W xenon or 200W mercury lamp.

This assembly is missing the low voltage lamp system, but the entire arc lamp system is present along with the beam-splitter / mirror system for switching between the two lamphouses. The arc lamp housing includes an adjustable collector lens, iris diaphragm, and a swing-out diffusion disk between the collector and the arc lamp position. The system for holding the arc lamp is centerable using two knobs on the side of the lamphouse, and the position may be locked using concentric locking collars. The arc lamp is supported by a swing-aside holder for the base of the lamp – connection to the anode is via a flexible lead. There are two separate conduits for the anode and cathode with bushings and locking strain reliefs. The cables are present but the leads on the interior of the lamphouse have completely corroded. The cables have been removed. It would be possible to install new connectors after shortening the cables by about 10 inches. The strain relief boots remain on the cables.

The lamphouse also contains two five-position filter holders. One holder contains three different neutral density filters and what appears to be a VG-9 green filter. There is also an ‘open’ position. They are all in excellent condition and can easily be exchanged using the retainer springs. The second slider holds a metal disk for beam suppression, what appears to be a pair of BG 3 or BG 12 filters (dense violet blue); a UG-5(?) nearly opaque filter that is cracked; and a light aqua filter which is probably a BG-38 red suppression filter. The last position is a sandwich of two types of heat filter. The ND filter slider would be expected for use with a xenon lamp, but the second slider is obviously intended for UV and near UV fluorescence work.

All of the existing components are in excellent condition with the exception of the leads to the arc lamps. All controls work as they should. The only other issue is the screw for the clamping knob for fixing the Binolux assembly to the rear of the Zetopan has broken. It will be possible to replace this using the existing parts as a pattern. (The screw is fixed to the Binolux lamphouse – the knob and clamp segment with spring thread onto the broken screw).

Photo set 1496

BMI Surplus, Inc. is your best resource for new, pre-owned,
recycled & refurbished microscopes and microscope components.
We will work with you individually to find the perfect
microscope for your application.

Buy online or give us a call with any questions at 781-871-8868.
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work with you if you prefer to use your own carrier. We have 30
years of shipping sensitive scientific instruments & industrial
equipment. We ship with the utmost care

***MPN
***OEM Reichert
***SKU*** 22225

This is an unusual accessory for the Gaertner precision measuring slides. It consists of a rotary flange which can be installed in the threaded bush of the microscope carrier in place of the microscope. Once the bushing is installed, the angle bracket is fitted into the bushing and secured with a wingnut from beneath the slide carriage. The tension on the joint may be regulated by the wing nut.

The angle bracket has a large threaded bushing perpendicular to the plane of the slide. The internal thread of this bushing is identical to that used on the carriage slider, allowing instruments to be mounted at right-angles to the plane of motion. The direction of the instrument may be selected by rotating the entire bracket, and the orientation of the installed instrument may be adjusted by turning the bushing. There is a locking screw to clamp the bushing in the desired position.

I have not seen this accessory illustrated in any of the literature, but it is very well made. Please note that the precision cross-slide shown in the photos is not included. We have many suitable cross-slides available.

***MPN
***OEM Gaertner Scientific
***SKU*** 21432

With the addition of the erecting prism adapter, the normally inverted image produced by the standard Gaertner measuring microscopes is ‘re-inverted’ by use of a special roof prism. The M193 adapter also inclines the ocular at an angle of 60 degrees. The Gaertner catalog number is M193.

The adapter also increases the effective optical tube length of the microscope 26mm. The effect of this increase is to slightly increase the magnification while slightly decreasing the working distance and the field of view. The erecting prism replaces the standard eyepiece tube adapter. These normally have their own spider cross lines installed, however we often get them in with missing cross lines. These are offered at a reduced price. Glass reticles or scales may be installed by the user.

These adapters are in very fine condition cosmetically, and in perfect optical condition. They do not include the cross line reticle! We also have some available with the cross line – please see our other listings.

Photo set 1392
***MPN M193
***OEM Gaertner Scientific
***SKU*** 21421

With the addition of the erecting prism adapter, the normally inverted image produced by the standard Gaertner measuring microscopes is ‘re-inverted’ by use of a special roof prism. The M193 adapter also inclines the ocular at an angle of 60 degrees. The Gaertner catalog number is M193.

The adapter also increases the effective optical tube length of the microscope 26mm. The effect of this increase is to slightly increase the magnification while slightly decreasing the working distance and the field of view. The adapter replaces the standard eyepiece tube adapter, therefore the ocular sleeve as supplied with the erecting prism includes a spider cross line reticle in an adjustable sleeve mount with locking collar. The spider line is VERY fragile and under no circumstances should an effort be made to clean it!

These adapters are in very fine condition cosmetically, and in perfect optical condition. They do included the cross line reticle. We also have some available without the cross line – please see our other listings.

***MPN M193
***OEM Gaertner Scientific
***SKU*** 21420

The Gaertner Scientific M301A micrometer slide has two inches of travel. The carriage is threaded to accept the standard Gaertner measuring microscopes and telemicroscopes. The carriage ways are precision hand-scraped, and the leadscrew is hand-lapped to the nut. There is a special cam that tilts the nut as the carriage is positioned, thereby correcting any residual errors in the pitch of the lead screw..

There is a two inch scale to indicate the coarse position of the carriage, and a precision graduated drum to indicate the fine position directly to 0.0005 inches, and to 0.0001 inches via the vernier. A 19mm diameter post, 6 inches in length is permanently attached to the slide.

The slide is in superb condition, and has been cleaned and relubricated.

BMI Surplus, Inc. has a huge inventory of new, pre-owned,recycled & refurbished Microscopes, Microscope Parts & Microscope Parts and Components for sale.
We will work with you individually to find the perfect set up for your application.

Buy online or give us a call at 781-871-8868. We have experienced customer service representatives standing by ready to help you!

BMI Surplus, Inc. is a dealer in used and sometimes new Surplus Scientific & Industrial Equipment – we cater to clients in search of items to be used for specific applications.
We do not offer a guarantee as many of our items are purchased by professionals in need of parts and pieces.
You will find many of our items listed on our website as untested or as parts or repair units even though in they are in good used condition.

**Shipping, Handling & Freight fees are dependent on your location.
We will provide a freight quote to meet your individual needs and work with you if you prefer to use your own carrier.
We have 32 years of experience shipping sensitive scientific instruments & industrial equipment!

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***MPN M301A
***OEM Gaertner Scientific
***SKU*** 21405