Hacklinger gauge

Construction and repair of Classical Guitar and related instruments
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gabasa
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Hacklinger gauge

Post by gabasa » Wed Jan 11, 2012 5:18 pm

Does anyone know where to get a good deal on a Hacklinger gauge?
Is there a cheaper alternative?

Is anyone here willing to sell a used one?

Thanks!

Robert Webster

Re: Hacklinger gauge

Post by Robert Webster » Wed Jan 11, 2012 6:12 pm

No to all of the above, sorry. However I would advise that you only buy from a vendor that has a "no questions asked" return policy. I bought one a few years ago and had to return it because it couldn't match my dial caliper and a deep throated caliper (which matched each other) within 0.1mm over the range of ~1.5 to 4mm. The vendor took it back and the next one they sent was okay. I suppose I could have made up a cheat sheet but I didn't think I should have had to for the price I paid for it (nearly $400).

Bob

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Alexandru Marian
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Re: Hacklinger gauge

Post by Alexandru Marian » Wed Jan 11, 2012 6:15 pm

Mine reads consistently 0.1mm less but unfortunately I can't tell if it was like this from the beginning.

Robert England
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Re: Hacklinger gauge

Post by Robert England » Wed Jan 11, 2012 6:28 pm

Here's a thread over on the Official Luthier's Forum about making, and of course calibrating, your own:
http://www.luthiersforum.com/forum/view ... hacklinger
Robert

Michael Thames

Re: Hacklinger gauge

Post by Michael Thames » Wed Jan 11, 2012 6:33 pm

Alexandru Marian wrote:Mine reads consistently 0.1mm less but unfortunately I can't tell if it was like this from the beginning.
Be sure to clean all those little metal fillings off the magnet, they will add some thickness to the measurement.

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James Lister
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Re: Hacklinger gauge

Post by James Lister » Wed Jan 11, 2012 8:02 pm

I was talking to Gernot Wagner at a guitar festival a few years ago - he showed me his version of the Hacklinger, which his engineer friend made. It's a beautiful piece of engineering, and probably (I wasn't able to test it) more accurate than the Hacklinger. Gernot asked if I'd like to know how to make one for a few Euros. Guess what I said...

It's a similar principle to the Hacklinger, but uses three magnets, rather than 2 magnets and a spring. This makes the scale linear I think (certainly closer to linear than the Hacklinger). Calibration is quite simple, and so far seems pretty stable. Accuracy is probably about +/-0.1mm, maybe a little worse for a single reading, a bit better with multiple readings. It uses a shallow wedge (wood) with the calibrated scale marked on it to gradually seperate the top magnet from the middle one. You can probably work out the rest for yourselves - I'm just trying to remember if I promised Gernot not to disclose the design!

James
James Lister, luthier, Sheffield UK

Pete Beer
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Re: Hacklinger gauge

Post by Pete Beer » Fri Jan 13, 2012 12:09 pm

Hi James,

I reckon you're probably ok to share it, since he also showed it to a fair crowd of people just after his seminar. I also thought it looked very handy, as did your's when I saw it recently , but I have to admit I've never got round to making one and have now (of course!) forgotten what he told us.

-Pete

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James Lister
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Re: Hacklinger gauge

Post by James Lister » Fri Jan 13, 2012 1:04 pm

Hi Pete,

I'll try to put together a simple drawing when I get a spare moment. Feel free to remind me if I forget!

James
James Lister, luthier, Sheffield UK

vesa
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Re: Hacklinger gauge

Post by vesa » Sat Jul 29, 2017 10:14 am

gabasa asked:
Is there a cheaper alternative?
5 1/5 years after I ask the same question.
Or has anybody had success in making one to similar purpose?
Vesa Kuokkanen

Antonio Marin nr. 813 1995 (Bouchet)
Vesa Kuokkanen 2016

simonm
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Re: Hacklinger gauge

Post by simonm » Sat Jul 29, 2017 11:11 am

There is one discussed here. https://maestronet.com/forum/index.php? ... ng/&page=2

Over on Mimf years ago (about the same time as the first posts in this thread) there was a discussion about making a device as well. At least one version included the third magnet mentioned above. Unfortunately I can't find the exact thread. If I locate it I will update this post.


EDIT 1. This is the thread I was thinking of. http://www.mimf.com/library/A_prototype ... -2011.html With a read for anyone interested in such gauges.


EDIT 2.
I wonder if anyone rents the things ...
Last edited by simonm on Sat Jul 29, 2017 9:23 pm, edited 2 times in total.

Robert England
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Re: Hacklinger gauge

Post by Robert England » Sat Jul 29, 2017 3:29 pm

Search on the Internet for MAG-IC Probe.
Robert

jim watts
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Re: Hacklinger gauge

Post by jim watts » Sun Jul 30, 2017 12:17 am

Get American Lutherie #109. They have an article describing how to make one.
I made the one pictured below for about $30.The repeatability seems to be about .1mm.
magnetic thickness gage.jpg
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johnparchem
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Re: Hacklinger gauge

Post by johnparchem » Sun Jul 30, 2017 1:46 pm

I am with Robert look for MAG-IC Probe, maybe a bit pricy but it works well with great repeatability.

SteveL123
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Re: Hacklinger gauge

Post by SteveL123 » Sun Jul 30, 2017 1:57 pm

jim watts wrote:
Sun Jul 30, 2017 12:17 am
Get American Lutherie #109. They have an article describing how to make one.
I made the one pictured below for about $30.The repeatability seems to be about .1mm.

magnetic thickness gage.jpg
Can you describe how this gauge works? I can't tell from looking at the picture. Which part of the gauge do you put on the top of the instrument?

jim watts
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Joined: Mon Sep 05, 2011 7:19 pm
Location: Los Alamos, NM, USA

Re: Hacklinger gauge

Post by jim watts » Sun Jul 30, 2017 8:51 pm

Here's a link to a video describing it's calibration and use.
http://www.luth.org/images/web_extras/a ... lin_01.mp4

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