The B&L ‘ER-Arm’ is distinguished by its ability to allow rotation of a stereo microscope body about its optic axis. The rack & pinion focus drive is attached to various microscope stands via a pin on the back of the drive housing – the pin may be set at any angle from straight down to straight up.

This arm is especially suited to the larger boom type stands where the ability to rotate the pod is helpful as the boom is moved to various points over a specimen. The rotation feature precludes the port for a Nicholas illuminator.

These arms are of the later variety with a ‘low-profile’ flat rotating plate for reception of the microscope pod. Another unusual feature of the later ER-arms is the ability to invert the rotation plate within the ring. This gives additional versatility to positioning the pod relative to a stand and or specimen. Reversing the plate is very simple – the two retaining clips for the pod are simply swung to the center of the ring thus releasing the glide catch. B&L did make a special holder for the Nicholas illuminator that can be clipped to the side of the support ring.

The arms have been checked for proper operation, and range from excellent to near-mint condition. Photos are of typical example.

Location OA 19I

Photo set 1135
***MPN ER-Arm
***OEM Bausch & Lomb (B&L)
***SKU*** 17754

The B&L ‘ER-Arm’ is distinguished by its ability to allow rotation of a stereo microscope body about its optic axis. The rack & pinion focus drive is attached to various microscope stands via a pin on the back of the drive housing – the pin may be set at any angle from straight down to straight up.

This arm is especially suited to the larger boom type stands where the ability to rotate the pod is helpful as the boom is moved to various points over a specimen. The rotation feature precludes the port for a Nicholas illuminator.

These arms are of the gray color and therefore represent the earliest generation of instruments. All have been checked for proper operation and function. Most show some minor signs of use, but in general are in very good cosmetic condition. They are exceptionally well made.

***MPN ER-Arm
***OEM Bausch & Lomb (B&L)
***SKU*** 17752

Cambridge Instruments
31-33-66 Illuminator
31-35-32 Base
120V 9.5W
This lamp is for microscope illumination.
***MPN 31-33-66 31-35-32
***OEM Cambridge Instruments
***SKU*** 16482

This is a single focusing a10x ocular. This ocular will ONLY fit in the right-hand eyepiece tube of the Leitz series of binocular magnifiers. These magnifiers resembled inverted porro-prism binoculars and were supplied in three variations with fixed magnification objective lenses (0.7x, 1x, and 2x). They are unique in that the diameter of the ocular tube is 31mm (instead of the more common 30mm), and the length of the two ocular tubes differed. The left-hand tube would only accept the ‘fixed’ eyelens ocular, and the right tube the focusing ocular. Consequently, the shoulders on the two types of oculars were in different positions. Oculars were always supplied in pairs with one fixed and one adjustable eyelens.

These magnifiers were first produced in the 1920’s, and production continued in one form or another until around 1980. Around 1970 Leitz changed the tube diameter to the more conventional 30mm, so if you have a very recent magnifier, you should double-check to make sure this ocular will fit!

The lens is in very fine condition – just the typical wear in the enamel on the focusing knurl. The lens is in perfect condition although it does not appear to be coated. This lens would date from the early 1960’s or very late 1950’s judging from the font face on the ‘Germany’ engraving. It is more recent than the other a10x we have available.

Photo set 2064
***MPN
***OEM Leitz
***SKU*** 32256

This is an earlier Olympus eyepiece as supplied with their compound microscopes. It has a chrome-plated brass barrel with a black anodized front lens bezel. Nomenclature on the bezel reads:

CK 10x
Olympus Tokyo
‘Bi’

The glass is in near-perfect condition. The chrome-plated barrel does have some minor scuffing.

Photo set 2063
***MPN
***OEM Olympus
***SKU*** 32255

This ocular is the one standardly supplied with the 30mm wide tube GZ-series of StereoZoom microscopes from Leica Microsystems. The ocular has a 22mm field-of-view index (this is the diameter of the observable field when the microscope is set to 1x magnification.

This is for a single ocular. It is in optically perfect condition, but the cell does show evidence of having been dropped. The removable sleeve for installing reticles has some crimped areas, and there is a small rough area on the outside edge of the upper bezel. Neither blemish will affect the performance in any way.

Photo set 2059

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.
We’re here ready to help you!
**Shipping & 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 30
years of shipping sensitive scientific instruments & industrial
equipment. We ship with the utmost care!
***MPN 13410750
***OEM Leica
***SKU*** 32251

This quadruple nosepiece seems to have disappeared from the more recent Melles Griot catalogs. It is identical to the triple nosepieces but with four RMS threaded positions. The nosepiece is very well made, with two ball-bearing races akin to the Leitz nosepieces of similar vintage. The click-stop detent is internal and remains very positive. It is marked ‘Germany’.

The nosepiece is in excellent condition, however the lubricant is a bit stiff. It would benefit from a cleaning and relubrication but is functional the way it sits.

Photo set 2034
***MPN
***OEM Melles Griot
***SKU*** 32227

The Volpi fiber optic illumination systems are among the finest produced. The Intralux 6000 was a top-of-the-line illuminator. It featured a three-position lamp intensity switch alternating between two direct connections to the transformer secondaries (no resistors in series for reducing intensity). The middle position switches off the mains supply.

A very quiet cage fan is positioned immediately behind the lamp socket and provides very ample cooling even with the higher intensity selected. Additional regulation of the lamp output is possible using a helical wedge that reduced the amount of light to the end of the fiber bundle. A special dichroic heat filter is interposed between the lamp and the fiber bundle. In addition, there is a slot on the top of the unit for reception of special filter carriers. An empty holder is supplied with the illuminator.

The illuminator uses type DDL halogen lamps (150w 20v). Access to the lamp socket is via a wide door on the top of the housing. Lamps are easily exchanged without the use of any tools. The port for the fiber bundles is 15mm in diameter, and has a small keyway used to prevent rotation of the gooseneck type (semi-rigid) bundles.

The lamp socket is in very good condition and holds the lamp very firmly. It may be easily replaced when required using a terminal block accessed after removing the door. The instrument is fully functional. Cosmetically, the finish of the housing does have a few scratches near the handle, and the rubber molded grip on the aluminum handle has frayed a bit on one end (see photo).

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***MPN Intralux 6000
***OEM Volpi
***SKU*** 30147

This SZ-LA-10 ring light adapter threads into the base of the Scienscope SSZ series stereo microscopes. It has a 48mm diameter thread for attachment to the microscope body. A second internal thread (also 48mm diameter) allows one to attach additional accessories to the adapter. The outer diameter of the adapter is 2.000 inches. A relieved section of the tube is used to clamp the ring light to the adapter.

These adapters are lightly used. Threads are in excellent condition, but there may be light marks fin the clear anodized finish from clamp screws.

Photo set 1926.

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***MPN SZ-LA-10
***OEM Scienscope
***SKU*** 30131