Telescopic tee shaped measuring devices

My question is to anyone who has experience with these Tee shaped verniers and would they justify the cost?

Jesse.

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.

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

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.

For small bores 0.4 to 1.4 I use this

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

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.

Hardly surprising Bogs, ya don't see too many Telescopic Bore Gauges with a vernier scale on

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

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!

I bought a set recently, I can now get decent fits whereas I struggled before. Best £14 I have spent recently.

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

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

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.

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

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

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

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

Tony

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

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.