Pivot Gauge

[dhall]

Hi All,

I recently bought a few gauges on Ebay. One of those was my actual target, a roller jewel gauge. Pictured below was one of the other gauges I received. From what I gather, this one is for measuring pivots. No sure if I'm right here. A confirmation of my assumption would be great. The gauge also has an abbreviation of "DEN". I have looked around and don't find this relative to watchmaking. Any clue to what this abbreviation means?

Thanks,

Don

[Waggy]

Could it be an abbreviation for Denier?

"Denier (/ˈdɛniər/) or den (abbreviated D), a unit of measure for the linear mass density of fibers, is the mass in grams per 9,000 metres of the fiber. The denier is based on a natural reference: a single strand of silk is approximately one denier; a 9,000-metre strand of silk weighs about one gram."

The pivot gauge looks interesting, however I wouldn't trust myself to drive a pivot into a wedge incase it jams and gets damaged/snaps trying to get it free.

More a comment on my ability and incompetence than the quality or design of the tool 

[Neverenoughwatches]

7 hours ago, dhall said:

Hi All,

I recently bought a few gauges on Ebay. One of those was my actual target, a roller jewel gauge. Pictured below was one of the other gauges I received. From what I gather, this one is for measuring pivots. No sure if I'm right here. A confirmation of my assumption would be great. The gauge also has an abbreviation of "DEN". I have looked around and don't find this relative to watchmaking. Any clue to what this abbreviation means?

Thanks,

Don

Den / Dennison is a unit measurement of size this is actually a mainspring gauge . I haven't heard of a pivot been measured in Dennison before.  Though the small thickness gauge is  usually supplied with a Jacot tool and is more accurately known as a pivot destroyer.

[Waggy]

41 minutes ago, Neverenoughwatches said:

Dennison is a unit measurement

Learned a new thing today! 

Looked this up and found this informative document:

Watkins-MainspringGauges.pdf

[RichardHarris123]

I've remembered something I had forgotten.  I've come across Dennison before but forgot all about it as I'm never going to use the units. 

Maybe we should start a  thread on obscure units of measurement. 

[Neverenoughwatches]

35 minutes ago, Waggy said:

Learned a new thing today! 

Looked this up and found this informative document:

Watkins-MainspringGauges.pdf 2.92 MB · 0 downloads

The width is otherwise known as mainspring height and strength as thickness for us more modern guys.

Edited May 15 by Neverenoughwatches

[Waggy]

25 minutes ago, RichardHarris123 said:

Maybe we should start a  thread on obscure units of measurement. 

I used to have a lecturer during my Engineering classes who was always beating a drum about quoting units, I remember one day he was so exasperated with our class he said "quote your units!!!!...I don't care what units JUST QUOTE THEM!!!"

My next assignment I calculated the velocity and quoted the units, something along the lines of: "Thus the velocity of the body will be 0.00345 furlongs per fortnight"

He graded my work as an F, then crossed it out and gave me an A+, turns out he had a sense of humor after all.

[rossjackson01]

The more I get into this hobby. The more I am amazed at the standard of those preceding. Amazing people and amazing skills. We wear their history on our wrists.

Edited May 15 by rossjackson01
Spelling, Grammar

[Neverenoughwatches]

3 hours ago, Waggy said:

Thus the velocity of the body will be 0.00345 furlongs per fortnight"

That sounds like the running distance of a horse I bet on 2 years ago, I'm still waiting for the phone call to let me know its crossed the finish line. 

20 minutes ago, rossjackson01 said:

The more I get into this hobby. The more I am amazed at the standard of those preceding. Amazing people and amazing skills. We wear their history on our wrists.

Elegantly put Ross and yes we do .

[dhall]

Thanks to everyone for your help. I am simply amazed at the knowledge of you folks. You are all truly "watchmasters".

[Neverenoughwatches]

On 5/15/2024 at 9:30 PM, dhall said:

Thanks to everyone for your help. I am simply amazed at the knowledge of you folks. You are all truly "watchmasters".

Aw fanks mate , thats the nicest thing anyone has said to me for ages