24mmX27mm Combination Wrench

[sandman2234]

So who recognizes this 1/8 open end wrench?

That would throw me a curve!
David from jax

 

[M59]

That would throw me a curve!
David from jax

One clue. Its foreign but was used on cars built 1928 to 1931ish in USA.

 

[Spanner]

If we move to metric then what am I going to do with hundreds of these tools?
Here is a 1/8 open end wrench on a ruler with scale in inches.

Lets see where this takes the thread.

Where this should take the thread is towards the conclusion that you are either being mischievous or that you have a poor understanding of the British imperial sizing system.

I presume the former.

That picture is of a 1/8th Whitworth spanner of the esteemed 'King Dick' brand, made in England and widely used in vintage industrial circles.

I have noted that a lot of machinery, particularly turf equipment made in Western Australia still uses Whitworth fasteners.

 

[M59]

Where this should take the thread is towards the conclusion that you are either being mischievous or that you have a poor understanding of the British imperial sizing system.

I presume the former.

That picture is of a 1/8th Whitworth spanner of the esteemed 'King Dick' brand, made in England and widely used in vintage industrial circles.

I have noted that a lot of machinery, particularly turf equipment made in Western Australia still uses Whitworth fasteners.

Give that man a "Good Post" for a correct answer. I will however ask why you would even consider I have a poor understanding of the British imperial system as I clearly indicated is was a 1/8 not a 1/8 inch ( as in a SAE unit).

Now what is your response to the second part about it being used in manufacturing cars in the USA from 1928 to 1931ish?

And your handle is very appropriate as these "wrenches" are identified as "spanners" in the UK and I'm guessing also in Australia. It took someone, who is most likely older than 30, from the other side of the globe to correctly answer my riddle.

 

[Spanner]

Give that man a "Good Post" for a correct answer. I will however ask why you would even consider I have a poor understanding of the British imperial system as I clearly indicated is was a 1/8 not a 1/8 inch ( as in a SAE unit).

Well, I was being facetious as I did indicate that I presumed 'the former' option of your being mischevious.
Nevertheless, SAE spanners/wrenches seem to display their size as a fraction. eg. 1/8 without the 'inch (") marking.
Metric items normally show just the number of millimetres eg. 10 - for 10mm, 13 - for 13mm etc.
The Whitworth items usually seem to display a capital 'W' (as in your picture) or a 'BSW' designation.

Now what is your response to the second part about it being used in manufacturing cars in the USA from 1928 to 1931ish?

I would offer you this interesting Wiki page which describes the rise of the Whitworth system. In my experience its similarity to UNC is such that many 'repairs of necessity' will utilise a Whitworth nut on a UNC bolt (or vice-versa when nothing correct is available, the slightly mis-matched thread forms often proving as effective as Loctite.

History of Whitworth

The story about the Royal Navy's Crimean gunboats is quite illuminating.
As is the note about Whitworth being used in USA up to the 1960-70's, particularly in aluminium work.

The photo of the 2 spanners cleverly demonstrates our mutual understanding of the sizing.

Thank-you for the "Good Post.
I'm in New Zealand, work with spanners and yes, am over 30.

 

[rontaki]

My first 10-speed bike ha some Whitworth fasteners on it.

 

[M59]

I would offer you this interesting Wiki page which describes the rise of the Whitworth system. In my experience its similarity to UNC is such that many 'repairs of necessity' will utilise a Whitworth nut on a UNC bolt (or vice-versa when nothing correct is available, the slightly mis-matched thread forms often proving as effective as Loctite.

History of Whitworth

Thanks for Whitworth link. Fun to read through it again. My introduction to Whitworth was 45 years ago when family friend asked me to help remove body of English car so he could do a frame and running gear refresh on a early 20's car. Been collecting and using BSW, SAE, and Metric tools since then. I can, between the three tool sets, remove pretty much any fastener including those damaged by rust, age, abuse or production tolerance differences. Biggest problem is determining what thread is for machines using mixed standards. I fall back on my collection of thread gauges. Tapered threads are a pain to identify due to the taper.

 

[NoTrespassing]

We use 55 degree Whitworth threads on microscope objective adapters .8 x36 tpi.

 

[M59]

We use 55 degree Whitworth threads on microscope objective adapters .8 x36 tpi.

Very interesting. I would have thought metric would be go to unit, given Germany and Japan make the high end stuff, so is the Whitworth thread common in the microscope sector or just in one supplier. Which microscope producers use Whitworth thread?

What is the unit on the "0.8"?

Always looking for quality British standard tools - gauges, tapes & dies. Koken, Stahlwille, and Gedore are my go to for quality British standard tools still being produced. Who are you aware of?

 

[M59]

The photo of the 2 spanners cleverly demonstrates our mutual understanding of the sizing.

Always looking for quality British standard tools - gauges, tapes & dies. Koken, Stahlwille, and Gedore are my go to for quality British standard tools still being produced. Who are you aware of?

An unusual spanner