New Calipers

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New Calipers

85lebaront2
Administrator
These showed up one day in my FB feed and having had a couple of pairs that quit, these were cheap enough to try. They measure to the nearest .0005" or .01 mm and seem pretty accurate. They are metal which beats the cheapo ones I bought at AutoZone (plastic, no depth capability and only read in .01 inches or .1 mm increments.
Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

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Re: New Calipers

Gary Lewis
Administrator
Nice, Bill!  Can't tell the brand, but the accuracy seems good.
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: New Calipers

Rembrant
In reply to this post by 85lebaront2
Nice. I'd be lost without my calipers. I have a similar set...they're just cheap ones, but they've lasted for years and are pretty accurate to this day. I check them every now and then with a 0.003" feeler gauge, and they're usually correct. If they're accurate enough at 3 thou, they're accurate enough for what I usually use them for.

We have nicer ones at work that I have access to, and they get calibrated annually, so if I do need to measure to tighter tolerances, I have had access to them.
1994 F150 4x2 Flareside. 5.0 w/MAF, 4R70W, stock.
1984 F150 4X2 Flareside. Mild 302 w/ 5spd. Sold.
1980 F150 4X4 Flareside. 300i6 w/ 5spd. Sold in 2021.
1980 F100 4X2 Flareside. 351w/2bbl w/NP435. Sold in 1995

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Re: New Calipers

85lebaront2
Administrator
In reply to this post by Gary Lewis
No brand name anywhere. Back side has some thread charts including Whitworth. It really does seem like a nice set of calipers, all metal, at least the parts that need to be. It is accurate enough that that is what I measured the seat belt bolts with.
Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

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Re: New Calipers

Gary Lewis
Administrator
Whitworth!?!?!?  Only a few of us on here are old enough to know 'bout them.  Or, maybe some that are into bikes.  I'll bet even Matt in the UK doesn't know Whitworth.

On thing I loved about that standard was that the wrench size referred to the diameter of the bolt.  So a wrench marked 3/8 went on a bolt head or nut for a 3/8" diameter bolt.
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: New Calipers

kramttocs
Administrator
I learned something (many things) new

http://progress-is-fine.blogspot.com/2017/01/the-evolution-of-standard-wrench-sizes.html?m=1

Scott
'Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole

But there ain't nothin' wrong with the radio
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Re: New Calipers

Gary Lewis
Administrator
That's an interesting scan.  (Didn't read it all, but lots of it.)

I wrote a research paper about 15 years ago on the standardization of thread sizes.  Not sure where it is at the moment, but what I found was quite interesting to me.  In the US standardization happened by industry.  For instance, in ship building, in automobile manufacturing, in the aircraft industry, in woodworking, in watch making, etc.  And there were overlaps, with things like one industry having numbered sizes, like 8-32, 10-24, 12-24, and 14-20.

Yes, "14-20".  Not "1/4-20".  Those are two different sizes and came from two different industries.  They look to be the same but a #14 screw is slightly smaller and the nuts won't go on a 1/4-20 bolt.  So when consolidation happened we needed to lose one.  (But I still have 14-20 taps and die.)

Lots of that kind of thing happened as we standardized.  But the real standardization came during the two world wars.  Allies found they couldn't exchange parts.  In fact, they didn't have the right tools to work on each other's gear.  So standardization happened.
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: New Calipers

grumpin
All the foreign built aircraft I worked on were standard, what I would cal SAE. Occasionally you would find a metric part. Saft batteries made in France were metric. There was a fitting on a hydraulic pump on the Beechcraft King Air 350 that was metric. It was foreign made.

Worked on planes from Israel, Italy and Great Britain.
Dane
1986 F250HD SC XLT Lariat 4x4 460 C6-Sold
1992 Bronco XLT 4x4 351W E4OD
1998 GMC Sierra SLE K1500 350 4L60E
Arizona
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Re: New Calipers

85lebaront2
Administrator
In reply to this post by Gary Lewis
I have a set of British Standard wrenches, they were purchased from Snap-on when I was at Tysinger Motors and need some for Jaguars, MGs and the occasional Mini we got in. So I have British, American and Metric wrenches in my tools. Also a nice set of Skinner Union service tools.
Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

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Re: New Calipers

grumpin
85lebaront2 wrote
I have a set of British Standard wrenches, they were purchased from Snap-on when I was at Tysinger Motors and need some for Jaguars, MGs and the occasional Mini we got in. So I have British, American and Metric wrenches in my tools. Also a nice set of Skinner Union service tools.
Those are cool tools to have!

I forgot, a German aircraft too.
Dane
1986 F250HD SC XLT Lariat 4x4 460 C6-Sold
1992 Bronco XLT 4x4 351W E4OD
1998 GMC Sierra SLE K1500 350 4L60E
Arizona