Knife and Watch combo. Let's see them!

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A post for two threads.
D.
 
mitchnola said:
Nice, thanks for all of the info! I’ve got a customer that works at one of the more well known jewelers in town. I’ll check with him tomorrow to see if his watch guy is capable. I’d love to have my Hamilton and Oris running better. I’d certainly wear them more often.
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What are the issues with your Hamilton and Oris models? How long have you had them?
I am a relative novice in the knife world but I have been collecting watches for 25 years and would consider myself an expert.
 
Dickie Watty said:
What are the issues with your Hamilton and Oris models? How long have you had them?
I am a relative novice in the knife world but I have been collecting watches for 25 years and would consider myself an expert.
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They just don’t keep time well. I lose about 5 minutes in a week. I did ask my guy at the jewelers if they can be adjusted. He said they would look at them and see what they could do. Didn’t really inspire much confidence.
 
5 minutes a week is not a healthy movement. However timekeeping can be affected by many factors.
A healthy watch with ETA or Selita will keep time to about +/- 20 spd or better. A tuned watch will be +/- 5 spd or better
If the watches are more than 5-10 years old they likely need a service.
 
Dickie Watty said:
5 minutes a week is not a healthy movement. However timekeeping can be affected by many factors.
A healthy watch with ETA or Selita will keep time to about +/- 20 spd or better. A tuned watch will be +/- 5 spd or better
If the watches are more than 5-10 years old they likely need a service.
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I bought these from the grey mrkt so no telling how long they sat on a shelf but the Hamilton is 3-4 yrs old and the oris is 2 yrs old. Seems like I need to find someone to tune them.
 
Yeah, start with an adjustment, they can put it on a timeographer and tell if the amplitude is ok and other things.
 
Dickie Watty said:
5 minutes a week is not a healthy movement. However timekeeping can be affected by many factors.
A healthy watch with ETA or Selita will keep time to about +/- 20 spd or better. A tuned watch will be +/- 5 spd or better
If the watches are more than 5-10 years old they likely need a service.
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I've never had a watch keep that bad of time. I've got some old junker mechanicals that aren't worth servicing and haven't been serviced in more than 20 years that keep better time than that.
 
jbmonkey said:
I've never had a watch keep that bad of time. I've got some old junker mechanicals that aren't worth servicing and haven't been serviced in more than 20 years that keep better time than that.
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Yes, an unregulated Swiss movement and some Japanese movements should keep +/- 10 spd or better. So much depends on wear habits, resting position, temperature and other factors. COSC certification is -4/+6 per day. That is chronometer standard. It comes from back when sailors used their watch to navigate a ship. If it was off more than that they would be off course. Even today -4/+6 per day is excellent timekeeping for any mechanical watch.
 
Dickie Watty said:
Yes, an unregulated Swiss movement and some Japanese movements should keep +/- 10 spd or better. So much depends on wear habits, resting position, temperature and other factors. COSC certification is -4/+6 per day. That is chronometer standard. It comes from back when sailors used their watch to navigate a ship. If it was off more than that they would be off course. Even today -4/+6 per day is excellent timekeeping for any mechanical watch.
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yeah i know. I've been wearing and collecting mechanical watches since the late 80s......
 
I use an App called WatchTracker which lets me timestamp where I observe my watch hands vs the atomic clock/internet time servers. It can track if the watch hands are moving more than they should, or less over time. I attached a photo of each watch to the database to keep with the graphs.

It requires good reflexes, or taking multiple samples in a row so it can average them. I'll set my watch and record a time, then intermittently over a few days or week I will recheck the time, and the app compares what I see vs atomic time standards.

Here are some examples of how my current rotation is performing, with some on my wrist and some on a winder if needed (wolf winder). You can see in the Seiko King Turtle results just where the movement failed, and the time keeping with the new movement afterwards - the seiko showed the most variability in timekeeping as well. Also included is my Luminox quartz watch which is keeping time to within +0/15 sec/day.

Luminox Quartz
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Next is my Luminox Automatic with Sellita SW200 movement - this table shows the avg timekeeping on 4 different runs that I measured over the past year or so. Some of these runs were over a long period of months, instead of over just a few days. This is withing COSC specs and very accurate.
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Oris Diver Automatic. It's actually the Oris Upcycle, not Recycle. I have one data run where I didn't finish it, because a power outage caused my watch winder to stop and not restart. This is also pretty accurate, on or off the wrist.
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Oris Big Pilot watch (I labeled it a field watch for some reason). I have not bothered to test it often, as it's new. I don't recall if this should be a chronometer or not; but I only checked the accuracy once, after buying it on my UK cruise as a less expensive watch to wear on land than my Rolex. Not bad for not being broken in yet.
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My Rolex DSSD D-Blue (James Cameron) has been pretty consistent and accurate. It's 5 years old now. I wear this watch more than any other watch in my collection.
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Seiko King Turtle Ceramic Bezel - This failed in Oct 2022, and with new warranty movement it is working great at +4 sec/day. When new it started off about 7-8 seconds a day slow, and over time got slower and slower in that 1st year. The beat to beat error became high and irregular, and regulation did not help.
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