62" Micrometer Length Standard Calibration

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countryboy1966

Hot Rolled

Joined

Jan 10, 2009

Location

Thompson, Ohio

• Oct 26, 2017

• #1

I would put in the metrology section, but I don't think it would get the exposure.

Does anyone know of a company in the United States that can calibrate up 62" length standards and provide accredited certs?

Cleveland Specialty is can calibrate but cannot provide accredited certs.

 

Mtndew

Diamond

Joined

Jun 7, 2012

Location

Michigan

• Oct 26, 2017

• #2

You can try these guys, but I don't know their capacity.
Precision Measuring Tools, Calibration & Gages Equipment Distributor-Waterford, Michigan - A.A. Jansson, Inc.

 

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DMF_TomB

Diamond

Joined

Dec 13, 2008

Location

Rochester, NY, USA

• Oct 26, 2017

• #3

countryboy1966 said:

I would put in the metrology section, but I don't think it would get the exposure.

Does anyone know of a company in the United States that can calibrate up 62" length standards and provide accredited certs?

Cleveland Specialty is can calibrate but cannot provide accredited certs.

Click to expand...

.
.
try
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Brunson Instrument Company -
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they had setup with laser inferometer used for measuring invar bars and making optical alignment scales. using high magnification and the laser in a temperature controlled room
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now invar bar is rated for low expansion and contraction with temperature changes but everything else does expand and contract with temperature changes. so invar is not necessarily the best for everything. in my experience steel used to measure steel they expand and contract the same with temperature changes. usually it is better or at least more repeatable. when you use invar all you do is measure how everything changes length when the temperature changes

 

gbent

Diamond

Joined

Mar 14, 2005

Location

Kansas

• Oct 26, 2017

• #4

Have you considered doing it yourself? That is 3 x 24", a 12", and a 2". I have a long block set I could put together I think would do the job, but uncertified.

 

SIP6A

Titanium

Joined

May 29, 2003

Location

Temperance, Michigan

• Oct 26, 2017

• #5

NIST will do that .

Dimensional Technical Contacts | NIST

 

EPAIII

Diamond

Joined

Nov 23, 2003

Location

Beaumont, TX, USA

• Oct 26, 2017

• #6

I think you mean 2 X 24", a 12", and a 2" = 62".

And yes, why wouldn't you use certified gauge blocks? Isn't that what they are for?

gbent said:

Have you considered doing it yourself? That is 3 x 24", a 12", and a 2". I have a long block set I could put together I think would do the job, but uncertified.

Click to expand...

 

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DMF_TomB

Diamond

Joined

Dec 13, 2008

Location

Rochester, NY, USA

• Oct 26, 2017

• #7

Brunson can manufacture length standards from invar or any other metal you want. just give a phone call or send a email

 

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DanielG

Stainless

Joined

Oct 22, 2014

Location

Maine

• Oct 26, 2017

• #8

I get my calibration done by East Coast Calibration in Hallowell, Maine. Their price list show micrometer standard calibration going up to 80". They're ISO 17025, so the cert should meet requirements.

http://eastcoastcalibration.com/

 

C

countryboy1966

Hot Rolled

Joined

Jan 10, 2009

Location

Thompson, Ohio

• Oct 26, 2017

• #9

DMF_TomB said:

Brunson can manufacture length standards from invar or any other metal you want. just give a phone call or send a email

Click to expand...

I called Brunson, but they said they deal with optical mic related items not length standards for dial micrometers. Maybe a second Brunson?

 

D

DMF_TomB

Diamond

Joined

Dec 13, 2008

Location

Rochester, NY, USA

• Oct 26, 2017

• #10

countryboy1966 said:

I called Brunson, but they said they deal with optical mic related items not length standards for dial micrometers. Maybe a second Brunson?

Click to expand...

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same place optical mic sees optical scale at 1 to 100 feet away. optical scale made by a type of photographic process and i saw them use laser inferometer to check scales they just made
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they also had invar bars to set distances when moving a optical alignment instrument a specific distance on a special stand
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if they say they do not make length standards i am not sure why seeing how they had equipment. the laser i believe had output like .00001"
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but thats over 15 years ago. maybe i am not remembering everything correctly

 

triumph406

Diamond

Joined

Sep 14, 2008

Location

ca

• Oct 26, 2017

• #11

EPAIII said:

And yes, why wouldn't you use certified gauge blocks? Isn't that what they are for?

Click to expand...

Not everybody has calibrated gage blocks at hand. Mine aren't calibrated, and aren't going to get calibrated unless a customer requires me too.

 

Ray Behner

Diamond

Joined

Mar 27, 2009

Location

Brunswick Oh USA

• Oct 26, 2017

• #12

Don't know where you're at in Ohio, but these guys are good:

Machinist Tool Repair

 

C

countryboy1966

Hot Rolled

Joined

Jan 10, 2009

Location

Thompson, Ohio

• Oct 26, 2017

• #13

Source has been found. Thanks.

For those curious:

East Coast Calibration was very responsive and can do up to 80" as Daniel states. Even willing to expedite in two days.

Mitutoyo in Aurora, Il can calibrate their own standards as well at a reasonable rate of $67 each.