Telescopic tee shaped measuring devices

This topic has 21 replies, 16 voices, and was last updated 1 March 2015 at 12:11 by Kevin F.

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28 February 2015 at 10:43 #181594
Jesse Hancock 1
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@jessehancock1
My question is to anyone who has experience with these Tee shaped verniers and would they justify the cost?

Jesse.
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28 February 2015 at 10:43 #23743
Jesse Hancock 1
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@jessehancock1
Any one had experience?
28 February 2015 at 11:23 #181607
Windy
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@windy30762
Are these what you mean **LINK**

If so I use them a lot on my cylinder bores etc. you just have to be delicate when measuring with micrometer.
28 February 2015 at 11:33 #181609
Jesse Hancock 1
Participant
@jessehancock1
Windy would you say there are worth the price and less fuss than a blunt nosed vernier? If not I can't see the justification.

John please excuse me for not putting pictures on here. I don't own a camera or phone which is equipped to transfer to my laptop, or at least I haven't found a lead as yet.

Links I have tried but so far no success.

Jesse
28 February 2015 at 11:49 #181612
Windy
Participant
@windy30762
I find them very useful for checking my cylinders for piston clearance and parrelism which is very critical on the flash steamer.

For one offs a home made go, no go gauge might be of more use.
28 February 2015 at 12:33 #181619
Bob Brown 1
Participant
@bobbrown1
For small bores 0.4 to 1.4 I use this
28 February 2015 at 12:44 #181621
Emgee
Participant
@emgee
Hi Jesse

I also use the telescopic gauges for measuring slots and bores. They are simple to use and you attain a feel when tightening, removal from the bore is achieved by tilting one end over.

Measure over the gauge with micrometer or vernier, with continued use you will achieve repeatable and accurate results.

Some other internal measuring aids shown in my photos, they were obtained over many years from engineering sales or auction sites but all are from established manufacturers.

Emgee
28 February 2015 at 13:01 #181624
Hopper
Participant
@hopper
If you are measuring small holes, say half inch and under, the ball-type small hole gauges are much easier to use. And get the full ball type, not the cheapo half-ball rubbish that I fell for without realizing it.

For the bigger stuff the T gauges take a bit of practice to get the right "feel" but work just fine if you have a gentle touch.
28 February 2015 at 13:18 #181626
FMES
Participant
@fmes
Posted by Bogstandard2 on 28/02/2015 10:54:24:

Jesse,

It would be nice for you to put up a picture or a link, as what you have decribed I couldn't picture in my head.

John

Hardly surprising Bogs, ya don't see too many Telescopic Bore Gauges with a vernier scale on
28 February 2015 at 13:24 #181628
JasonB
Moderator
@jasonb
I've got one of the sets that ARC sell, at £13.50 I'd say they are worth the money. Don't use mine that often, mostly on cylinder bores or the hole in a casting to take a cylinder liner. You can feel if the bore is tapering once you get the feel for them and a blunt mosed veneer won't reach far down a 6" long bore.

J
28 February 2015 at 15:03 #181634
John Haine
Participant
@johnhaine32865
I think they are good, use them all the time for measuring bores. I got a nice Mitutoyo set at an MEX in a tatty plastic wallet, about 6 for a tenner, brilliant value!
28 February 2015 at 15:14 #181636
Tony Ray
Participant
@tonyray65007
I bought a set recently, I can now get decent fits whereas I struggled before. Best £14 I have spent recently.
28 February 2015 at 15:16 #181637
Jesse Hancock 1
Participant
@jessehancock1
JasonB, very good point mate, hadn't thought of that. doh!

Emgee, Nice selection of kit. I'm getting there.

Thanks guys for your comments and tips.

Jesse
28 February 2015 at 17:24 #181658
Neil Wyatt
Moderator
@neilwyatt
I find them useful and accurate – the long handle makes it reasonably easy to get them at right angles to the bore.

I set them so they can slip under pressure then moving them in the bore squeezes them to the right setting, then I tighten up a nip. They seem to be consistent to a thou.

Neil
28 February 2015 at 23:53 #181682
John Stevenson 1
Participant
@johnstevenson1
I do a lot of bores in reclaiming bearing housings.

Over the years I have convinced myself that I need to try a better / faster more accurate methods and have bought bore gauges, internal micrometers of 7,310 various types but always come back to these telescopic gauges.

I use then with a set of cheap digital verniers as they are so quick and give you a direct reading but when close I swap to micrometers as I love the digital verniers but do not regard them as an accurate means of measuring to a tight tolerance.
1 March 2015 at 01:56 #181689
Ian S C
Participant
@iansc
I got a set at a clearing sale, some one said that's a bit of a waist of cash(I hadn't used them before), they cost me $NZ 5, they get regular use, and I wouldn't be without them.

With the end telescoped out a little larger than the bore, put it in the hole at an angle, straighten it up, there by pushing the end in as you rock it, tighten and remove at an angle. ( I know what I mean)

Ian S C
1 March 2015 at 07:19 #181695
Paul Lousick
Participant
@paullousick59116
These are a bit more expensive but eliminates the need for the correct "feel" required to correctly measure a bore diameter. Easier for us less experienced operators.

Paul.

Edited By Paul Lousick on 01/03/2015 07:20:03
1 March 2015 at 09:55 #181704
Ian S C
Participant
@iansc
Paul, until I got the second hand telescope gauges, A bore gauge like yours was all I had used, mainly measuring cylinder bores in sizes around 5 inch.

Ian S C
1 March 2015 at 10:03 #181706
Tony Pratt 1
Participant
@tonypratt1
Posted by Paul Lousick on 01/03/2015 07:19:12:

These are a bit more expensive but eliminates the need for the correct "feel" required to correctly measure a bore diameter. Easier for us less experienced operators.

Paul.

Edited By Paul Lousick on 01/03/2015 07:20:03

What do you mean by 'a bit more expensive'?

Tony
1 March 2015 at 11:05 #181713
Paul Lousick
Participant
@paullousick59116
Available on fleebay from $65 – $360. Depends on make and precision but includes a dial indicator.

I had previously bought a cheap set of telescopic gauges and that's what I got. Cheep! Was not happy with them. Quality gauges are a different matter.

Edited By Paul Lousick on 01/03/2015 11:10:08
1 March 2015 at 11:20 #181718
Gordon W
Participant
@gordonw
What's wrong with calipers ? The old style stiff-jointed type I mean. Mine will reach about 4" down a hole and iare good for bearing fitting etc. after a bit of practice. I suspect that the same amount of practice is needed for the bore gauges.
1 March 2015 at 12:11 #181726
Kevin F
Participant
@kevinf
Spring calipers and a micrometer is what I use and ive found them to be accurate once you've got a good ' Feel ' when adjusting the calipers .
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