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Brown & Sharpe Manufacturing Co. 1902 Patent No.8 Micrometer Caliper
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 Posted: Sun Feb 26th, 2017 08:27 am
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Si.
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Hi Reg. :wave:


Thanks for helping me to waste another good few hours on insane vintage 'research' ! ;)


However, I do now know pretty much everything there is to know, about the 100 year old Brown & Sharpe No.8 Micrometer, which I dug up from the ground while playing with diecast bulldozers when I was 10 years old !


Well, all these years later, nothing much has changed !

I'm still playing with diecast bulldozers...

...& still using the refurbished vintage Brown & Sharpe No.8 micrometer ! :shocked:





Brown & Sharpe Manufacturing Company Shops  1896  Providence, Rhode Island, U.S.A.


:moose:


More 'precision posting'  .  .  .  s  o  o  n


Si.



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 Posted: Mon Feb 27th, 2017 04:26 pm
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Si.
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Joseph R. Brown  1886  engraving



Looks like a precision engineered beard to me !

I guess the engraving process lends itself to fine beard detail.

Not sure what the Health & Safety guys would say about working on a drill-press with that these days though.

I'm surprised ZZ-Top didn't get theirs caught up in their spinning-guitars !! :shocked:

:cool:

Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Tue Feb 28th, 2017 10:37 pm
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Tony M
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Hi S1, that was a good find any change of seeing a pic of the Micrometre, did you ever restore it to working order, los like I have to put in a search what it is .
I found a Horse shoe, should o kecpted it, someone to throw it over my shoulder into a pond, hasn' given me any goog luck going back quite a few years back :)
Nice find in finding that floor plan what I need to find with my Sydney Central station building floor plan with measurements what I have other drawing to scale with measurements not the floor plan are you going to model that building big job.
How is the weather  like now in the UK starting to warm up.
Tony

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 Posted: Tue Feb 28th, 2017 10:44 pm
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Tony M
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Wow, done with a drill  press, these days they use Dremmel drills for that sort of art, would love to the how to that, have seen rain forest carved by a Dremmel dill.
Would that have been done on a brass sheet, taken ages to do that nice indeed.
Tony.





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 Posted: Wed Mar 1st, 2017 07:43 am
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Helmut
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I remember that in the company I once worked for, we had a chief mechanic who used to "re-calibrate" gap-gauges by putting them into a vise:bang:

P.S.
Before we all die unenlightened about the #8 - on ebay you can have a look at it.

@Si
Tell us what part of it you precision-hammered back into sha(r)pe, please.;)

Last edited on Wed Mar 1st, 2017 09:59 am by Helmut



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 Posted: Wed Mar 1st, 2017 11:26 am
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Si.
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Hi Helmut :wave:


Do you always shop with GADGET GIRL on eBay ?

GADGET GIRLS prices look a tad high to me.

You could 'loose your shirt' gambling on a GADGET GIRL listing ! ;)


I suppose my $0.00c price-tag was hard to beat though !! :bg:





Sorry Helmut, no '5 Einsteins Award' :brill: :brill: :brill: :brill: :brill: for research this time ! :f:

There do seem to be TWO versions of the stalwart No.8 about.


GADGET GIRL has the mooodern one I think, with all the 'hoop-la'.

Mine I think is possibly an older version of the No.8 which is ratchetless. :shocked:

Perhaps I should have gone with GADGET GIRL after all, instead of scratching around in the dirt looking for precision equipment.

Analogue 'finger torque' is the answer here though, works every time ! ;)


Helmut, Tony, photos of the 'genuine article' to follow, or course.

I did have a spot of bother snapping it on the Motorola.

The lighting could have been better, it is very shinny from all the refurbishment !


:moose:


Si.


Helmut, I think it received a 'light blow' with the ol' ball-pein...

...or maybe Pops & I just twiddled the adjustment screw a smidgin. L:

A feature on the left of GADGET GIRLS eBay model.

It was 40 years ago though.

Mmm...



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Wed Mar 1st, 2017 12:20 pm
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Helmut
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@Si
I referred to ebay only because it shows how the gauge looks like - no intention to fuss around with American girls:rah:!
I have several of these. Made by C.Mahr of Esslingen of course, 0.01mm pitch and all calibrated against a 25mm gauge-block. So not only the relative measurements, but the absolute ones are reliable also. BTW - do not hold it with bare hands for too long. It deviates by a few hundredths due to the hand's surface temperature with time.

Last edited on Wed Mar 1st, 2017 02:33 pm by Helmut



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 Posted: Wed Mar 1st, 2017 02:46 pm
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Si.
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Hi Helmut :wave:


Good idea having a couple of mics.

I guess as the first heats up to unacceptable inaccuracy in the palms, as one peruses the latest hot GADGET GIRL listings; swapping over to the still chilled reserve makes a lot of sense.


I've always found that my most used calibration tool in practical applications, was an ordinary pack of silver Zig-Zags !



Essential when allowing for all the backlash in a grumbling Colchester !

Works every time !

Top ticket !!


:moose:


Si.


Never did get my head around all that millimeter stuff. L:

Still buy eggs in boxes of a dozen as well. :cool:


And kilometers to go before we sleep  .  .  .



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Wed Mar 1st, 2017 07:21 pm
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Helmut
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The paper method described by C. Traub in MR in the 60's -yes, that I recall vivdly and admit that I use it frequently. The paper I use is 0.1mm or ~4 thou. Slide it between bit and workpiece until it just starts to catch, and you know your datum. That ZigZag must be around one or two thou?
Speaking of eggs - when I grew up they only came per dozen or half of it. You could buy them by the 'Schock', too - that was 20 pcs. and stems from the same root as the Swedish word for it: 'Tjugo'. and  Chaucer's 'twentiń°'
Speaking of metrics - I do know the Brits don't like any foreign rulers.

Last edited on Wed Mar 1st, 2017 07:36 pm by Helmut



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 Posted: Thu Mar 2nd, 2017 10:12 pm
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Si.
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" That Zig-Zag must be around one or two thou ?

Speaking of metrics - I do know the Brits don't like any foreign rulers."



Hi Helmut :wave:


A silver Zig-Zag is a certain 1/2000"

I was gonna try & work that out in fractions or decimals of a Meter ...

... but I know I will get the ZEROs wrong & be shamed FOR EVER !


Oh well ...

... the Zig-Zags are OK, unless you are working for N.A.S.A. :shocked:


I did want to check any 'cumulative error' though ...

... so I stacked up 1999 Zig-Zags on the kitchen table ...

... & had my 1" block at hand ...

... at which point, some $%&£@?* opened the kitchen door !! :f:


Wouldn't have happened at N.A.S.A. !


:moose:


Si.



____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top


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