Telescopic Gauges

[Barking Mat]

Post #4, I think.

Shars 0.2-2.2" Inside Micrometer 0.00024" Accuracy, 0.001" Graduation 303-2100 P}: Amazon.com: Industrial & Scientific

Shars 0.2-2.2" Inside Micrometer 0.00024" Accuracy, 0.001" Graduation 303-2100 P}: Amazon.com: Industrial & Scientific

www.amazon.com

 

[Barking Mat]

Semantics ? Internal micrometers don't come that small?

 

[ronan]

I bought a set of Starret gauges off ebay second hand, they weren't expensive. You can be lucky. Got a set of Brown and Sharpe small hole gauges the same. What i know is if you buy good and look after tools, you'll have them until you drop off the perch.

 

[daleyd]

Semantics ? Internal micrometers don't come that small?

Possibly - this is the type I was thinking of

 

[ronan]

Never had a set and not keen on paying 195 quid or even 95 as the prices vary from 15 quid up to over 200 there must be a reasonable set for sensible money around.

Any suggestions please.

I purchased 2 sizes of bore Gauges only to find out they just use a standard dial indicator and do not measure the size of the bore.

In fact the large set jumps and misses some sizes...it's appalling.

Have a look at Insize tools, i seen their micrometers used at a college for the students, and they were not bad. Worth a look.

PRODUCTS - INSIZE Co., Ltd.

PRODUCT

www.insize.com

 

[northwest]

Mitutoyo....

Good metrology costs...sorry.

It is true, but it is equally true Mitutoyo are not the be all, end all.

There is some very good Starrett, Eclipse and early Moore and Wright stuff about at reasonable prices, or you can have your eyes water for a while when you are paying for some of the Swiss made 3D sensors. I have a "reasonably priced" unit, it was more than 300 quid.

 

[Rannsachair]

You get the odd bargain, I paid £50 for a tool cabinet that included 3 sets of TESA 3 point bore mikes - nice kit.

 

[grim_d]

It is true, but it is equally true Mitutoyo are not the be all, end all.

There is some very good Starrett, Eclipse and early Moore and Wright stuff about at reasonable prices, or you can have your eyes water for a while when you are paying for some of the Swiss made 3D sensors. I have a "reasonably priced" unit, it was more than 300 quid.

Not the be all end all no doubt but the thread is specifically about telescopic gauges.

Starrett are very expensive, even used, Moore and Wright aren't what they used to be, never seen old Moore and Wright telescopic gauges so can't comment, did eclipse ever make telescopic gauges?

Meanwhile there's usually very nice, little used sets of mitty telescopic gauges for sale around the £60 - £80 mark and you know exactly what you're getting with them.

 

[Barking Mat]

You get the odd bargain, I paid £50 for a tool cabinet that included 3 sets of TESA 3 point bore mikes - nice kit.

View attachment 279538

Ooph, you jammy, jammy, spawny....

Free tool cabinet !

 

[JEZGUZ]

Were you wearing a stripy jumper and a sack over your shoulder?

 

[Barking Mat]

You get the odd bargain, I paid £50 for a tool cabinet that included 3 sets of TESA 3 point bore mikes - nice kit.

View attachment 279538

Ok, I'm curious,

In the big box, what do the two pen like attachments do.

For going down deep bores?

 

[Rannsachair]

Ok, I'm curious,

In the big box, what do the two pen like attachments do.

For going down deep bores?

Aye

 

[Brad93]

You get the odd bargain, I paid £50 for a tool cabinet that included 3 sets of TESA 3 point bore mikes - nice kit.

View attachment 279538

Steal

 

[Brad93]

Probably a £1000 worth of gauges used, maybe double that new.

 

[ronan]

Probably a £1000 worth of gauges used, maybe double that new.

Probably a bit more than that, nearly 3,500 euros a set in the metrology place near me

 

[Barking Mat]

Well, that's not a steal, it's a modest lottery win.

 

[Seadog]

Thanks @daleyd You've saved me some ink

 

[ukracer]

On a similar note, has anyone used cheap bore gauges?

10 to 18mm Dial Bore gauge

Dial Bore gauge with a 10 to 18mm measuring range

www.machine-dro.co.uk

I could buy a couple of sets at this price quite happily. Question is, are they any good? Even if they were a bit rough, they'd still be more repeatable than telescope gauges, and for anything over 35mm you can generally use an internal mic.

That's my problem. I purchased two sets to do this job. I then realised that they don't measure size easily. You need to calculate and I found it very hard....add to that there are some sizes. 57mm for example that fall between two extensions. One was too long the next size was not long enough. .

 

[Farside]

When I last did my Zuk lump I bought a cheapo set of telescoping gauges and found them adequate to indicate whether there was any bore wear or ovality worth bothering about. In conjunction with an Aldidly vernier, I got a good enough set of results to reassure me.
Next one I'll have an upgrade, but not going for expensive stuff. I see Allendale have a fairly cheap dial bore gauge that more than covers the range I need and will do for subsequent builds I have in mind.

50 to 160mm Dial Bore gauge

Dial Bore gauge with a 50 to 150mm measuring range

www.allendale-metrology.co.uk

 

[Munkul]

That's my problem. I purchased two sets to do this job. I then realised that they don't measure size easily. You need to calculate and I found it very hard....add to that there are some sizes. 57mm for example that fall between two extensions. One was too long the next size was not long enough. .

Strange... would have thought it really easy, as they are a comparator rather than direct measure... set it to your nominal size with a mic or a ring gauge, and read out the difference on the clock, add/subtract from nominal size... sounds easy enough?

Bit crap that it misses sizes. 57mm sounds like a Nissan size IIRC

I've went slightly lower accuracy, and more out of interest, I ordered one of these last night:

Moore and Wright MW-516DIG Moving Jaw Digital Caliper n/a 12.7-150mm (6-0.5 inch)

12.7-150mm (0.5-6") Digital Inside Caliper Moore and Wright

www.machine-dro.co.uk

Not as accurate as a bore gauge or mic, but should be easily as accurate as any other calipers or telescopic gauge, which is good enough for bearing fits. I'll be able to see accuracy and repeatability against a mic, and make a judgement then if it's accurate or just a toy.
It's never going to be good enough for precision engine work, but will be great for rough farmer bushes etc.