Search found 14 matches

by PrecisionInstruments
Mon Nov 04, 2019 10:29 am
Forum: Microscopes and optics
Topic: New member: need Ortholux help please!
Replies: 6
Views: 793

Re: New member: need Ortholux help please!

Is it the Ortholux I series microscope? If so, to remove the binocular head you have to push the silver lever on the right hand side at the top of main microscope limb in, then slide the binocular upwards. It’s on a dove tail.
by PrecisionInstruments
Thu Aug 08, 2019 5:34 am
Forum: Microscopes and optics
Topic: Leitz Diaplan condenser problem
Replies: 5
Views: 1085

Re: Leitz Diaplan condenser problem

No tricks. And by condenser clamp, I trust you speak of the little knurled knob on the left.
Does the clamp/knob twist? No = problem, Yes = next
Does the condenser shift forward at all when clamp is released? No = problem with condenser dovetail mount, most likely old lubricant. Yes = No Problemo!!
by PrecisionInstruments
Thu Aug 01, 2019 12:58 pm
Forum: Microscopes and optics
Topic: Pol Stage (petrographic)
Replies: 1
Views: 1292

Re: Pol Stage (petrographic)

a) It is a legit Pol rotatable stage. The attachable mechanical stage on top is an accessory mainly used for high magnification adjustments. Placed on the correct microscope, the overhang should not be an issue, in terms of colliding with microscope frame/limb. b) the cut out’s in the inner disk are...
by PrecisionInstruments
Sun Jun 30, 2019 9:33 am
Forum: Microscopes and optics
Topic: Walton/Becket eyepiece graticle Olumpus BX40
Replies: 16
Views: 1937

Re: Walton/Becket eyepiece reticle Olumpus BX40

mrsonchus wrote:
PrecisionInstruments wrote:Didn’t come with a HSE Test Slide did it?
No, there was just the reticle......
Bugger!! They’re worth a pretty penny
by PrecisionInstruments
Thu Jun 27, 2019 6:28 am
Forum: Microscopes and optics
Topic: Walton/Becket eyepiece graticle Olumpus BX40
Replies: 16
Views: 1937

Re: Walton/Becket eyepiece graticle Olumpus BX40

Didn’t come with a HSE Test Slide did it?
by PrecisionInstruments
Thu May 23, 2019 12:09 pm
Forum: Illumination Techniques
Topic: Darkfield using Olympus BH2/BHS
Replies: 5
Views: 2363

Re: Darkfield using Olympus BH2/BHS

The BH2 (BHT, BHTU, BHS) had either a dedicated Darkfeild condenser, or a dark field ring incorporated in the phase condenser turret. These would fit into the position where your current condenser is. I believe the condensers in the links or above post would not be compatible with your microscope.
by PrecisionInstruments
Thu May 23, 2019 11:33 am
Forum: Microscopy accessories
Topic: How to remove Reichert microtome chuck?
Replies: 34
Views: 6953

Re: How to remove Reichert microtome chuck?

Now for the question. I have added a close-up of the front of the machine below. There are two light expansion springs and two pairs of round pins that are not being used for anything. Since one end of each spring is fixed the other ends must go to something that moves. The springs are very light s...
by PrecisionInstruments
Tue May 21, 2019 1:09 pm
Forum: Microscopy accessories
Topic: How to remove Reichert microtome chuck?
Replies: 34
Views: 6953

Re: How to remove Reichert microtome chuck?

By the looks, you have a RM2045. A semi motorised beautiful specimen. The advance mechanism from these series (2035, 2045, 2055) are still used today on the Leica RM2125RTS. The advance and retraction is purely mechanically driven. The only electronic function in the specimen advance and retract fun...
by PrecisionInstruments
Wed May 15, 2019 7:11 am
Forum: Microscopes and optics
Topic: Problem with Swift Optical SM80 Stereo Miscroscope
Replies: 1
Views: 993

Re: Problem with Swift Optical SM80 Stereo Miscroscope

I’d say the lubricant between both items 10 and 13 is dry and turned to glue. Should not have to remove 18 from 10, otherwise collimation error will be an issue.
by PrecisionInstruments
Mon May 13, 2019 9:48 pm
Forum: Microscopes and optics
Topic: Wild Leitz Laborlux S Coarse/Fine Focus
Replies: 3
Views: 1133

Re: Wild Leitz Laborlux S Coarse/Fine Focus

Great!! Yes, the lubricant in these barrels turn green after a period of time (good old Leica 410). The two brass lock nuts are to be set to a nice tension where the coarse focus feels a nice drag, but can cause the stage to fall if too loose.
by PrecisionInstruments
Mon May 13, 2019 10:06 am
Forum: Microscopes and optics
Topic: Wild Leitz Laborlux S Coarse/Fine Focus
Replies: 3
Views: 1133

Re: Wild Leitz Laborlux S Coarse/Fine Focus

What exactly was disassembled? The focus barrel mechanism or the z-axis linear bearings?
The barrel has no influence on the height stop, though it is crucial for tension.
Which knob is drifting/falling? Coarse or fine knob?
by PrecisionInstruments
Wed May 08, 2019 12:11 pm
Forum: Microscopy accessories
Topic: Leitz wetzlar orthoplan 402a condenser does not rotate
Replies: 12
Views: 2894

Re: Leitz wetzlar orthoplan 402a condenser does not rotate

The lubricant has most definitely turned green and dried out, a common occurrence for this particular Leitz/Leica lubricant after a period of time (10+ years). If you would like to clean and replace with original factory lubricant which was called 410, it is actually a Kluber lubricant called NONTRO...
by PrecisionInstruments
Tue May 07, 2019 1:04 pm
Forum: Illumination Techniques
Topic: Purple spot on Field Lens
Replies: 8
Views: 2059

Re: Purple spot on Field Lens

I agree with Apochronaut. If you have removed the possibility of reflection from above, then it may well be a hazed screen on the under side of the field lens presenting an image of the field diaphragm. This optic does get dirty on the underside, though this optic assembly can also eventually show l...
by PrecisionInstruments
Mon May 06, 2019 12:07 pm
Forum: Illumination Techniques
Topic: Purple spot on Field Lens
Replies: 8
Views: 2059

Re: Purple spot on Field Lens

Have you placed a business card directly under the condenser to see if it disappears? It may well be a reflection.