Verdict indicator hair spring

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Verdict indicator hair spring

This topic has 11 replies, 6 voices, and was last updated 21 August 2021 at 12:26 by sparky mike.

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20 August 2021 at 11:55 #559102
sparky mike
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@sparkymike
Hi I have a Verdict dial indicator and I believe the hair sprig has broken or become detatched. Anyone had experience taking these apart ? Where can you get new hairsprings from ?

Mike.
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20 August 2021 at 11:55 #20417
sparky mike
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@sparkymike
20 August 2021 at 12:02 #559105
Robert Butler
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@robertbutler92161
Google Verdict Dial Test Indicator Spare Parts.

Robert Butler
20 August 2021 at 12:56 #559115
peak4
Participant
@peak4
The ones I have, you can take a side plate off, which exposes the workings.
If you need to remove the finger at the end, beware, as there may be a couple of tiny ball bearings acting as a pivot.
I've used lighter petrol as a cleaning agent with reasonable success.

Bill
20 August 2021 at 13:01 #559116
Clive Foster
Participant
@clivefoster55965
MJ Allen, who currently own verdict, offer a repair service for most reasonably recent models. My experience a fair few years ago was that repair costs were around half the cost of a new equivalent.

**LINK**

https://mjallen.co.uk/products-and-services/metrology

Does depend on whether they still make or hold parts.

I know they can no longer fix the cylindrical body type. When I asked about getting my rather sticky "not so E-Bay bargain" one repaired I had the distinct impression that Verdict were unhappy with the general performance and durability of that version! Not only was repair not possible they also suggested that, if I had any others of that style, I be prepared for their demise. Apparently the more compact mechanics had unsolvable durability issues.

Clive
20 August 2021 at 15:13 #559140
sparky mike
Participant
@sparkymike
t the moment there does not seem to be any way to get into the workings of the dial.

I have removed side plate with its minute screw, but all looks fine in there. Re. the early type, my father used to make parts for these in a sub contract role at Astralux in Brightlingsea Essex. Somewhere I have the blueprint drawing of one . I will have to dig it out and post it on here.

Mike.
20 August 2021 at 20:45 #559184
old mart
Participant
@oldmart
Replacing the hairspring would be quite difficult for a beginner. The exact hairspring would not be vital as it only eliminates backlash.
21 August 2021 at 09:15 #559209
sparky mike
Participant
@sparkymike
Based on the well worn theory, some human put it together in the first place (not always correct in these automated days !! ),it should be possible to take it to pieces. It is composed of two units, the base unit, which presents no problems and the dial /stem unit, which looks like it is pressed into the base/stem. I wonder if the only way in is to remove glass /needle and dial to get to the hair spring. I did wonder if the ball end was too tight but a drop of oil proved that not the case.

Mike.
21 August 2021 at 09:57 #559215
sparky mike
Participant
@sparkymike
Now this has got me stumped. Found out this morning that the needle retracts fine when verdict is on its side (either side) or upside down ,but not when dial is at the top. ???

Mike.
21 August 2021 at 11:05 #559225
roy entwistle
Participant
@royentwistle24699
Sounds like it needs cleaning and lubricating

Roy
21 August 2021 at 12:04 #559232
peak4
Participant
@peak4
I had one the same. My guess is that it had been banged or dropped allowing the dial end of the operating lever to jump one or two steps.
As you know, the dial spindle has a course thread, mine looks like it's made out of a helical wire winding.
I found that the hair spring needed a bit more pre-loading by moving the lever a couple of steps further along the "thread"

Bill
21 August 2021 at 12:26 #559238
sparky mike
Participant
@sparkymike
Hi Bill, exactly what I have found !!

The pointer looks like it is slightly off set and I would think it should be straight. Howvever, I don't intend to straighten it as it may well then break.. I found that the weight of the beam when the indicator was upright, was too great for the return/hair spring and after a bit of trial and error, putting the end of the beam in different positions on the worm , it now works well. I replaced the beam spring by looping a piece of cottom thread on it and then lifting it just enough to fit it into the hole on the beam. I had removed the complete beam which in my case needed a 4mm spanner on the lock nut. The beam would not have to be removed if you wanted to just move beam to new position on the worm, but the screw would need to be loosened a few turns. You can only access the screw by moving the spring clip to one side ,that holds the ball of the pointer in place.

It only cost me £10.00 at a boot sale at which I also bought a set of USA micrometers (Tool company Auburn) for similar price, and also includes in the case various adaptors. There is one short brass adaptor but this may have been home made or may have nothing to do with it. Thanks for all replies.

Mike.
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