Show your neat stuff

[Blogwitch]

Peter,

I bought mine from Chronos

http://www.chronos.ltd.uk/acatalog/New-Handy-Vice-with-Serrated-haws.html


John

 

[Maryak]

Dunno if this is particularly unusual or not, but it's the only one I've ever seen:

It's just a 12" steel square, right? But look at the divisions on the outside scales; the quarters are divided into thirds, or 12ths of an inch. On the other side it's the expected 8ths. It is marked "AETNA 141, MADE IN USA". I've had it forever, don't recall where I got it.

Anybody got any idea what it's for?

Old English scales 1" : 1ft, 3/4" : 1 ft, 3/8" : 1ft.

Hope this helps

Best Regards
Bob

 

[steamer]

you know, lots of roofers work to pitch measured in run/12

8/12 pitch....that may be a framers square...it's easy to set pitch on the end of a roofing joist by measuring 8 on one leg and 12 on the other.

Dave

 

[Lakc]

I tried to buy one but they wont accept payment on paypal from out of the US

Peter

There are several Russian versions like that on ebay for around the same price.

 

[rkepler]

I bought mine from Chronos

http://www.chronos.ltd.uk/acatalog/New-Handy-Vice-with-Serrated-haws.html

(Unrelated to the tool but) why are they calling the jaws "haws"? I thought it might be a typo but it's repeated all through the product description, url, etc. A really, really consistent typo or a difference in language?

 

[dgjessing]

you know, lots of roofers work to pitch measured in run/12

8/12 pitch....that may be a framers square...it's easy to set pitch on the end of a roofing joist by measuring 8 on one leg and 12 on the other.

Dave

Hey - that's gotta be it! (Makes perfect sense anyway )

 

[Tin Falcon]

I have a book entitled the steel square AKA framing square it mentions the 12th scale
Tin

 

[mklotz]

Found it!

This reference...

http://www.residentialubc1233.com/tools/framing_square-carpenter_square.php

says:

The twelfth scale is commonly used for right triangle solutions without computation. The chief purpose of the twelfth scale is to provide shortcuts in problem solving with the framing square. Since the inch is divided into 12 parts, it allows the carpenter to reduce a problem to 1/12 size by allowing the graduations on tie scale to represent 1", i. e., 7 5/12" may be taken to represent 7 feet, 5 inches.

 

[steamer]

YUP...good for laying out stair frames too!

I also use a product called a "speed square"....it's the little triangular ones with a lip on one edge.

Very useful if you know how to drive it....

Dave

 

[Tin Falcon]

The carpenters steel square was apparently good for a lot more than square marks and cuts. I know they are good for angles on rafters and laying out stairs. But is seem they were also a tradesman reference and estimating tool.


http://ia700208.us.archive.org/2/items/carpenterssteels00hodg/carpenterssteels00hodg.pdf
Tin

 

[mgbrv8]

Now if you guys ever see a chance to buy a set of these for a fair price, buy them. They are called kopal clamps they are absolutely fantastic. They are wonderful for holding anything down I love them. As a side project I have been working on some miniature version of them also.

this site has some good details on how they work
http://www.tools-n-gizmos.com/specs/MonoBloc.html

David

 

[checkedout]

...

 

[GailInNM]

Diatest bore measuring indicator. This set measures bores from 0.057 to 0.830 with direct reading of 0.0001 inch. Great for measuring bellmouth and barrel distortions when lapping cylinders and for getting upper cylinder taper correct for pinch off of piston on small compression ignition engines. And it really simplifies fitting pistons to bores as I am never too sure about my technique using split ball and telescoping gauges and measuring with a micrometer.

They want insane amounts of money for a set like this, but by buying several incomplete sets over a 7 or 8 year period at salvage prices I managed to get this complete set put together.

Gail in NM

 

[steamer]

Cool Gail.......but now I have something else to collect!.... ;D

Dave

 

[mgbrv8]

Gail that is a really neat item.

David

 

[checkedout]

Gail! That is a very neat set of tools.

I have no idea how to use it, but I find I want one anyway.

Thanks for sharing!

 

[kcmillin]

That is a really nice set Gail. I love measuring tools, and collect them as much as I can.

Here are a couple e-bay finds I really enjoy. Not really unusual but can be hard to find.

This first one is a Biddle mechanical tachometer dated to the early 60's There are quite a few of these, but this one is a little different. It is switchable in five different zones from 30 RPM all the way up 100,000 RPM. It has very little friction, even my twin flame eater can turn it. My other mechanical tachs have a too much resistance for it.

It came with a vial of some of the stinkiest oil I have ever had the pleasure to smell. What would this oil be? What would be a good subsitute?

Here is an item that is great if you don't value your hair.

Ya, this don't get used a hole lot.

Kel

 

[mgbrv8]

Now that Starrett Dial master is what I call accurate.

Dave

 

[rkepler]

Not sure how I forgot this. It's an unusual caliper from Mitutoyo, long out of production. It allows measurement across components offset in angle. Here it looks like a pretty regular caliper:

And here it's setup for some offset measurement:

Some additional point mount to the jaws to make them into precision calipers or compasses, the dingus at the top make it a height gage or acts as a scriber, etc. Kind of neat. Mitutoyo 190-101. I never did find a manual for it, just a single page from the catalog.

 

[mgbrv8]

Now that is handy

Dave