# Pocket: Chronograph Timer Need Help with ID Unusual 3 color Dial

Discussion in 'Chronometers' started by Jim Haney, Jan 24, 2019.

1. ### Jim Haney Registered User NAWCC Member

Sep 21, 2002
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#1
I don't know who made this and I thought someone would recognize it. The dial is a work of art or engineering with Red, Blue & black.

It has a 30 Min accumulator scale at the top and I don't know what some of the Blue & red number tracks mean?

Inside the dust cover is lightly scratches P (M) ?esler click, 317 Engineer Co. A

The stamp inside the read lid says Depose Argentan and has a symbol above it.

2. ### Chris Radek Registered User NAWCC Member

Apr 13, 2014
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#2
Beautiful! It is just a tachymeter with range extended past one minute. The small dial's little colored rectangles tell you which scale to read.

3. ### Tom McIntyre Technical Admin Staff MemberNAWCC Star FellowNAWCC Ruby MemberSponsor

Aug 24, 2000
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According to the note on the dial, the spiral tracks calculate something for a distance of 1,000 meters.

When the hand goes around one full turn the calculation is 60. After two turns it is 30 while after 3 tuns it is 20 and 4 turns gives 15.

If my mind were working better right now, I could probably tell you the measurement. I can't figure out how 1,000 meters in one minute measure 60 of anything. If it said per mile instead of 1,000 meters, it would be measuring miles per hour for a measured mile.

Aha! It is measuring speed in Kilometers per hour over a measured Kilometer.

I see Chris is much more alert than I am.

4. ### captainscarlet Registered User

Oct 15, 2013
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Hi Jim, this movement has the look of a 'Valjoux 5KVM' Ranfft also has this listed as a 'Lip K432'. Great looking watch.

5. ### zedric Registered User

Aug 8, 2012
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As Tom says, it measures km/h over a measured course. If the hand is on its first revolution (up to 1 minute), then read off the inner red scale, which reads fro 240kmh/h to 60 km/h. If it takes longer, and the hand starts going around a second time, read from the light blue scale (from 60kmh to 30kmh) and so on for up to four revolutions of the hand, which measures down to 15km/h.

6. ### sharukh Registered User NAWCC Member

Oct 10, 2011
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#6
"Depose" is French for "Registered" or "Trademark"

Argentum is the Latin name for silver, so Argentan probably stands for an alloy of silver or maybe just a proprietary name for a "silvery" alloy.

Sharukh

7. ### Jim Haney Registered User NAWCC Member

Sep 21, 2002
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Thanks for all of the replies. The Ranfft site was no help, looks like a big ad page.

So, I would say it is an European WW! Tachymeter for measuring speed over distance in Kilometers