A Microscope Repair.

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dsquire:

--- Quote from: awemawson on March 03, 2015, 04:37:22 PM ---Pete I suspect many have been following your posts, myself included, but not making comments.

--- End quote ---

Pete

I'm guilty the same as Andrew. I definitly am learning something. Maybe I'll even get interested in them yet. :D :D

Cheers :beer:

Don

vtsteam:
I've also been following along Pete, and enjoying your work and writing! :coffee:

Pete W.:
Hi there, Phil,

Thank you for your post.

--- Quote from: philf on March 03, 2015, 04:29:27 PM ---Hi Pete,

Nice repair.

A long time ago I acquired an Olympus binocular microscope but the entire condenser holder and slide was missing. It was a challenge to make a new dovetail slide including the focussing rack and centering mount for the condenser but very satisfying when it was done.

I have too many microscopes and need to rationalise my collection. I'm watching a Baker Interference on eBay at the moment. I have a complete one sat in its box in our dining room which I regularly get earache about. (I think when they were new in the 1950s they cost something like £400). The analyser needs the polarising element replacing which will be interesting. It is something like a pie with a hole in the middle and then a 90 degree portion taken out. I was thinking of buying a polarised camera filter and modifying it but that will probably mean making a diamond core drill to put the central hole in and a diamond saw to take out the 90 degree slice - hence why I've not got round to doing it!

I have seen the price that some microscope lamps go for. I have several spares for my Wild M20 and M40 which I will hang on to.

What do you use to take photos through the microscope - a digicam, webcam or dedicated adaptor (or even a film camera)? It's something I'd like to have a go at.

I too find pond creatures fascinating.

:beer:

Phil.

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I seem to remember that we've discussed your Baker interference microscope before - was it on a thread of Rob Wilson's? And I seem to remember that you have a copy of Hallimond's book 'The Polarising Microscope'?

Regarding the analyser for the Baker, you may know that The Quekett have a members' shop and polarising material is one of the items they sell.

I confess that I'm not very clear about the difference between linear polarisers and circular polarisers - a friend who's a photography enthusiast tried to explain the differences and application to me but I must have had something else on my mind at the time!! :wack: :wack: :wack:

We have a couple of USB eyepiece cameras but we haven't used them very much - not enough space on the dining table for all the paraphernalia, lap-top, mouse etc. etc!! I can't use those with the CTS polarising microscope because it needs an eyepiece with cross-hairs.

Pete W.:
Hi there, Andrew,

Thank you for your post.

--- Quote from: awemawson on March 03, 2015, 04:37:22 PM ---Pete I suspect many have been following your posts, myself included, but not making comments.

I'm interested in your illumination comments - I have just brought into service a 'centring scope' that projects it's image onto a 3" ground glass screen - illumination being a 6v 15 watt 210 lumen microscope bulb. Although there seems to be no problem sourcing spares (quoted life is 100 hours) where I am using it (*) it would be far more convenient were it battery powered and brighter. To this end I have on order a small LED torch that I hope to modify. Torch is powered by a 3.6 volt 3000 mA /hr Lithium Ion rechargeable Seller claims 2200 lumens, but the LED manufacturer (CREE) seem to imply 220 is nearer the mark !

(* I'm using this device in the Traub lathe to measure tool height to be able to set them on centre, so it goes in a collet in the main spindle)

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Your centring scope sounds interesting - how about a couple of photos?

I'm also intrigued by what you say about the LED torch - you must have dismantled it to know that the LED is by Cree!! Does it have a driver board in there?

I have a centring scope, it's made by Isoma and I rescued it from a skip! It's semi-derelict and I'd like to repair it but there are a few other projects ahead of it in the 'to-do' list! It has a 12 mm diameter parallel shank about 125 mm long but I anticipate it would be more use to me with a 2 MT shank.

Pete W.:
Hi there, Don and Steve,

Thank you for your posts.

Steve, I've been following your tiny workshop and your furnace threads. I don't envy you your weather. We have a clear blue sky and bright sunshine here this morning.

I was impressed by a YouTube video by Keith Fenner, he's on Cape Cod, see

Oops!! :doh: :doh: :doh: I don't need to explain where Keith Fenner is to readers of MadModders, do I?!? I must have been thinking I was on a Microscopy forum!!

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