Is A 550-600mm Try Square Available?

[pollys13]

Is there a precision 550-600mm Try Square, with accuracy to a standard, ideally, not a silly price?
Cheers.

 

[eribaMotters]

I use a drawing board T square for accurate marking out on sheet material or my roofers square. I always double check off the opposite edge where possible.

Colin

 

[Spectric]

There are many options out there but they don't come cheap because precision and good engineering are never going to be cheap.

Look at

https://woodworkersworkshop.co.uk/hand-tools/marking-and-measuring/squares/
and Stainless Steel Squares & Accessories

Both very reputable sellers with excellent customer service and I don't have any affiliation with either.

 

[ChaiLatte]

I always double check off the opposite edge where possible.

And by doing so, you stand a good chance of decreasing the accuracy of your project.

By what means do you verify that the opposite edge is parallel to the first edge?

A reference edge is what it says, an edge you use for reference. A majority verdict or a second opinion are not the correct concepts to employ here.

 

[Ollie78]

I have a woodpecker 600mm t shaped one, it was expensive but very useful, I have seen engineers squares that big but even more expensive.
I suggest getting a 600mm ruler for a normal combination square head. I know Starrett and Axminster do them, probably cheapest way to get what you need.


Ollie

 

[recipio]

Just get a standard pressed steel rafter square and run a slot in a piece of walnut to accept it. Use some epoxy sparingly.

 

[pollys13]

Oh, just realized I do actually have a Magnusson 600 x 400mm framing square. I bought it some while back thinking it would be handy to have. That said, how do I check that it is indeed straight and square?
Thank everyone who replied.

 

[pgrbff]

go to amazon.co.jp. postage includes taxes and Shinwa products much cheaper
the English version is OK but it may still take a little searching

https://www.amazon.co.jp/gp/product/B0020E9QZO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

 

[pollys13]

go to amazon.co.jp. postage includes taxes and Shinwa products much cheaper
the English version is OK but it may still take a little searching

https://www.amazon.co.jp/gp/product/B0020E9QZO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

OK, thanks for that, is a little thin though, mine is 4mm thick.

 

[eribaMotters]

And by doing so, you stand a good chance of decreasing the accuracy of your project.

By what means do you verify that the opposite edge is parallel to the first edge?

A reference edge is what it says, an edge you use for reference. A majority verdict or a second opinion are not the correct concepts to employ here.

You are spot on and that is why I double check. If something is out of true it will show up immediately so I make sure I'll only work off my face edge.

Colin

 

[Sideways]

The easy check is to draw or knife a line with your square, flip it 180 degrees like turning the page of a book and mark on the same line. If there is significant error you'll see it.

If you are engineering, you'll be using dial gauges etc so I assume not that degree of precison.

A 12" empire true blue rafter square is pretty good at modest money but smaller than you specified.

If you have / have access to a sliding table saw with a good mitre gauge, you could machine up a big square from thick plastic or high pressure laminate like trespa that will be stable. Taking some time and sneaking up on the measurement, it's entirely possible to cut a square that is as accurate as you need for woodwork / layout / clamping up without spending a fortune for a commercial one.

Be a good test of marking out skills to lay out a 3-4-5 triangle and cut it with a tracksaw
Or use a MFT and well fitting dogs and cut one with that to whatever size you want.

 

[paulrbarnard]

https://benchdogs.co.uk/collections/t-square/products/t-squareIf you have the money… they come with a certificate of squareness

 

[user 43593]

Try Helios-Preisser. 3 Different levels of certification and I have used their mid grade engineering square without regret or incident. Amazon are having a sale at the moment and you should find what you need there.

https://www.amazon.co.uk/s?k=helios...9_2227971&tag=mh0a9-21&ref=pd_sl_8ojrqqidbe_e

 

[Jake]

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[user 43593]

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Strange. I bought my square directly from their website about 2 years previously. I wonder what has changed.

 

[toolsntat]

Oh, just realized I do actually have a Magnusson 600 x 400mm framing square. I bought it some while back thinking it would be handy to have. That said, how do I check that it is indeed straight and square?
Thank everyone who replied.

 

[toolsntat]

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