Search found 17 matches

by MarkG
Mon Nov 13, 2017 11:23 pm
Forum: Resources (online, books etc.)
Topic: LeeuwenHoek Links To Brian J Ford research
Replies: 9
Views: 3271

Re: LeeuwenHoek Links To Brian J Ford research

FYI

Back in August 2015 in this forum BillbillT posted this link to a Leeuwenhoek book.


https://archive.org/details/antonyvanleeuwen00dobe


Thanks Bill
by MarkG
Sun Nov 12, 2017 1:44 am
Forum: Resources (online, books etc.)
Topic: LeeuwenHoek Links To Brian J Ford research
Replies: 9
Views: 3271

Re: LeeuwenHoek Links To Brian J Ford research

Thanks for the comments Charles These pioneers were truly amazing geniuses. Accomplishing great discoveries with minimal technology available, which they created themselves. Patience, dedication and attention to detail and analyzing observations, I'm sure competition came in there somewhere also For...
by MarkG
Sat Nov 11, 2017 10:18 pm
Forum: Resources (online, books etc.)
Topic: LeeuwenHoek Links To Brian J Ford research
Replies: 9
Views: 3271

LeeuwenHoek Links To Brian J Ford research

Here are some links to Brian J Fords research on Leeuwenhoek and some on Robert Browne and the early microscopes. There are other Posts in this forum search on Leeuwenhoek brianjford.com has lots of info just browse around to find interesting stuff. some may be controversial but keep and open mind a...
by MarkG
Fri Mar 11, 2016 10:50 pm
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Fixed with new rack from ebay. Clearance from top of Condenser holder to top of stage holder was 1 1/16" now is 2". Condenser slides in an out no problem. Attached is a photo with stage all the way up and condenser all the way down. Note the bottom of the stage mechanism is 1" above the base and the...
by MarkG
Tue Mar 08, 2016 1:56 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

I think my standard may be hybrid. The base has a label saying it's a 16. And the nose is not removeable making it like a 14,15,16. The ebay seller listed 2 condenser racks. One he called 16 was brass with the helical gear like 75RR posted above. The one that looks like mine with the plain straight ...
by MarkG
Tue Mar 08, 2016 12:43 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Here's some pics of the ebay parts. The dovetail is brass and has with 3 mounting screws. The bottom screw holds the plastic rack and the dovetail. The middle screw just the dovetail the next screw the dovetail and the rack and acts as a stop. The top screw just holds the dovetail. It's a disappoint...
by MarkG
Sun Mar 06, 2016 8:29 pm
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

I thought I would like to post some pics of the final results. I found a rack on ebay for a reasonable price so after spending another hour carefully looking at what was visible I decided the only possible problem was damage to the plastic rack. The bay seller listed it as for Standard 18 not a 16. ...
by MarkG
Sat Mar 05, 2016 6:25 pm
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Thank you all for your help. It is sometimes a bit scary to wrench on something you're not sure if it is supposed to come apart the way you are attempting. With the old scope everything is very tight and removing screws and such is just at the limit of stripping the heads or breaking something. I ha...
by MarkG
Sat Mar 05, 2016 3:25 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Thanks Charles Yes I removed and replaced the spring latch circled in red. I also cleaned & replaced the ball detent/spring on the condenser. The thing now rotates freely and snaps properly into place. Both the Annulus adjustments are free and smooth as well as the Iris adjustment. I have you to tha...
by MarkG
Sat Mar 05, 2016 1:08 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

I took the good advice from 75RR. I've had the bottom off before so it was easy to do again. With base stage and condenser removed I could look more closely at the condenser mechanism. The knob controlling up/down only turns just a bit over 1/2 turn before stopping. I could not run the condenser hol...
by MarkG
Fri Mar 04, 2016 4:31 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Thanks Charlie. That seems it could be causing the problem. I will have to figure out how to get it apart. I wouldn't be surprised if the screw that holds the rack in place has backed out into the track, or maybe the gear or rack is damaged. Thanks much that gives me something to go ahead with. Stil...
by MarkG
Fri Mar 04, 2016 2:59 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Ok got photos and resized etc with stage all the way up and condenser all the way down. The distance from the top of the condenser mount to the top of the stage mount is 1 1/16 inch. The condenser from mounting face to top of lens is 1 1/2 inch. i.e. the condenser lens protrudes above the stage moun...
by MarkG
Fri Mar 04, 2016 2:33 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Give me a few minutes I will photo the scope with stage off as it is now. I think the condenser rack is not going all the way down.
by MarkG
Fri Mar 04, 2016 1:30 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Not on photobucket, but my condenser looks exactly like the one you pictured except between Zeiss and Germany is the number 4035196. It's 4 inches in diameter and overall height 1 3/4 inches from bottom of mounting flange to top of lens I can't remove the lens while condenser is mounted to scope no ...
by MarkG
Fri Mar 04, 2016 12:12 am
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Forgot to add. It has following positions:

PH1 Ph2 Ph3 with annuli present

J and D open

4 and 5 open
by MarkG
Thu Mar 03, 2016 11:31 pm
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Re: Zeiss Condenser ID 40 35 160 ?

Thanks for the replies. So quickly. Lifting stage and lowering condenser doesn't give enough clearance. The top lens catches on the opening in the stage. I will remove the stage again and try to post a photo. This is my first post so I assume I can figure out how to attach photo. 3 phots attached "I...
by MarkG
Thu Mar 03, 2016 8:39 pm
Forum: Microscopes and optics
Topic: Zeiss Condenser ID 40 35 160 ?
Replies: 27
Views: 5009

Zeiss Condenser ID 40 35 160 ?

Can anyone ID my Zeiss rotating condenser 40 35 196 I can't find the number ref in online Zeiss manuals or google search. It has 2 delaminated PH rings no iris and some blank holes D & J it's an apl 1.4NA not the flip type. Looks like the typical Zeiss condenser adjustments and etc. It can't be remo...