Mahr dial gauge query

[morrisman]

Hi

My two gauges arrived today .

Can somebody explain what the four knobs are for ? And, the connectors on top ?

The pointer on the cheaper one is bent slightly

Mike

[Ueee]

Hi Mike,
I got mine today too, the knob on the bottom right is for adjusting the zero point, just Luke turning the dial on a standard indicator, the bottom left on mine is where the remote lift cable screws in on mine. I'm sure BT will be along with more info, if we are lucky he may even have some literature.

[morrisman]

Hi Ewan

I've tried adjusting the zero point , but nothing moves as I rotate that knob. On both of them

Mike

[Ueee]

You need to have something indicated for it to show, set one up in a mag base and then try.

[morrisman]

You need to have something indicated for it to show, set one up in a mag base and then try.

Ah ! OK I will give it a go , thanks

[Stustoys]

Hi Mike,
The limit tell tails* on the "cheaper" one will be moved with your finger.
I think the knobs on the top of the other gauge move the limit tell tails* as they have an electrical connection.

Bob must be working late

Stuart

[morrisman]

Hi Mike,
The limit tell tails* on the "cheaper" one will be moved with your finger.
I think the knobs on the top of the other gauge move the limit tell tails* as they have an electrical connection.

Bob must be working late

Stuart

Hi Stuart

Yes your correct re: the limit markers on the cheaper one , they are manually moved with a finger .

I've discovered that the lower left knob on the Elmilliimess , moves the pointer around as you rotate it e.g., to the '0' or centre position or wherever you want it on the dial face . The two top knobs don't move at all , they are very tight

Mike

[Ueee]

The limit markers on mine are very tight....i feel i am going to bend them before they move. I guess thats just because it is new.

[Stustoys]

Hi Mike

I've discovered that the lower left knob on the Elmilliimess , moves the pointer around as you rotate it e.g., to the '0' or centre position or wherever you want it on the dial face .

I think you'll find its just "lifting the styles", just like a shutter release would.

The two top knobs don't move at all , they are very tight

Better give it away then.
Pick me pick me

pull and turn, push and turn?

Did you work out the knob on the right that Ewan was talking about?

Stuart

[jhovel]

The "EL" in your ELMilliMess stands for "Electrical". The two connectors at the top are to connect wires to that go to lights, buzzers or whatever. They connect when the limit tails are reached. They are internal contacts for go - nogo lights etc. Remember these gauges are comparators. So you can set it up for a particular height, set the tolerance for a series of parts and then put one after another under the touch probe and separate the parts that are out of spec quickly.

[morrisman]

Hi Mike


I think you'll find its just "lifting the styles", just like a shutter release would.

You mean like Ewans remote control device



Better give it away then.
Pick me pick me

You cheeky man .

pull and turn, push and turn?

maybe but I don't want to damage it

Did you work out the knob on the right that Ewan was talking about?

Yep, it works OK

Stuart

Thanks for the info re: the electrical connections

[Anorak Bob]

Sorry about the tardiness boys.

I don't know if any of you Mahr owners have looked at the dissection of a Zentimess here https://www.woodworkforums.com/f65/ma...3/#post1289149

They are dead easy to dismantle. And ah my apologies for the poor picture quality. Squinting sharpens the images.

[morrisman]

Thanks Bob

[Stustoys]

Oh so Mikes got the cheap two contact one

Thanks for the scans BT

Stuart

[Ueee]

Thanks Bob, I thought you may have something in your collection.
I wouldn't call 30 odd hours tardiness....just say you couldn't find the right book ( mind you, with the amount of literature you must have it could be very easy to loose something)

The electric units make the zentimess look cheap at $24.....

The other thing i notice is they sold tips with steel, carbide or ruby balls. Ruby is AlOx isn't it? I wonder if it is harder than carbide or if it has a lower friction coefficient?