Hydralic locking dial indicator stand

[Guzrik]

The latest skipdive gave me this Fisso stand.

The wingnut and rings are not standard and I feel the oil has leaked out.
Are these repairable and what would be a good place to look for parts?

 

[Rrobson]

What’s not working about it? Sounds like a daft question but it’ll help with diagnosis. Also, it doesn’t look like a hydraulic stand, looks like a mechanical one and there should be rods runny through the arms. Normally with these types the internal items need a clean and freeing off. There’s not much to go wrong with them.

 

[Guzrik]

What’s not working about it? Sounds like a daft question but it’ll help with diagnosis. Also, it doesn’t look like a hydraulic stand, looks like a mechanical one and there should be rods runny through the arms. Normally with these types the internal items need a clean and freeing off. There’s not much to go wrong with them.

It doesn't lock anymore.
I assumed it was hydraulic but I actually don't know.
I don't see an obvious point where to start opening it, but will try again.

 

[Guzrik]

What’s not working about it? Sounds like a daft question but it’ll help with diagnosis. Also, it doesn’t look like a hydraulic stand, looks like a mechanical one and there should be rods runny through the arms. Normally with these types the internal items need a clean and freeing off. There’s not much to go wrong with them.

It appears Fisso doesn't fabricate hydraulic ones indeed.
So now I'm thinking what parts are missing?

 

[RichardM]

A nice big knob to lock it off with instead of the wingnut.
As above, check to see that when the knob is tightened the two internal rods move to lock the end balls.

 

[Agroshield]

So now I'm thinking what parts are missing?

Maybe not any part, other than a better knob to a wingnut.

In this case, 'hydraulic' is a little bit of a loose term - a principle of operation (doing something in one place making something happen in another place) rather than actual fluid being used.

Turning the single fastener nut in the middle causes all three joints to tighten.

It might be worth looking on Noga's website as they specialise in this type of stand.

 

[8ob]

Looks like a conventional joint, perhaps the o rings were only there to add a bit of friction to aide the locking up.

Bob

 

[indykid]

Maybe not any part, other than a better knob to a wingnut.

In this case, 'hydraulic' is a little bit of a loose term - a principle of operation (doing something in one place making something happen in another place) rather than actual fluid being used.

Mitutoyo made true hydraulic clock stands for a bit. I have a pair of the 7019Bs and they are oil filled and a joy to use. There's a Swiss company made hydraulic stands too that look an awful lot like the 7027 and 7028 in this old catalogue here. Be warned, Mitutoyo clock stands start at £500 though, the hydraulic stands were ~£700.

The mechanical stands use two wedges/cones in the centre hinge to drive the rods outward and lock the end ball joints. I agree a bigger knob will probably sort you out here (stop giggling at the back). If you reassemble what you have and tightening the wingnut gets you a little bit of friction, you likely just need more torque to generate the clamp load.

 

[GaryS65]

MPTec is the Swiss mob who make hydraulic stands. They're the Rolls Royce but I can't afford one. Also they don't make them very tall, so I'll stick to my Noga.