Watch Education
How to Read Watch QC Timegrapher Numbers Like a Pro
How to Read Watch QC Timegrapher Numbers Like a Pro
By Angelawatch Editorial Team | Updated for 2026
When buying high-end timepieces online, receiving pre-shipment photos is just the first step. Understanding your watch QC timegrapher reading guide ensures you can correctly interpret mechanical health before giving the final green light.
1. Deciphering the Core Metrics on the Screen
When your dealer sends a video of the machine testing your movement, you will see three primary values: Daily Rate, Amplitude, and Beat Error. Mastering this watch QC timegrapher reading guide starts by knowing what healthy thresholds look like.
[/text]⏱️ Daily Rate (Seconds/Day)
This measures how many seconds fast or slow your watch runs in 24 hours. A rate between -7s/d and +15s/d is considered excellent for mechanical calibers. (To understand how automated calibers differ, refer to our guide on Automatic vs Quartz Watches ).
📊 Amplitude (Degrees)
Amplitude indicates the swing rotation angle of the balance wheel. Healthy modern movements generally show between 270° and 310° when fully wound. For deeper context on mechanical standards, check out our insights on Luxury Watch Maintenance .
2. Quick Reference Acceptance Thresholds
To apply this watch QC timegrapher reading guide effectively during your purchase, keep this breakdown handy:
[/text]| Metric Parameter | Acceptable Standard | Action Required |
|---|---|---|
| Daily Rate | -10 to +20 s/d | Approve (Easily regulated) |
| Amplitude | 250° – 320° | Healthy power delivery |
| Beat Error | 0.0ms – 0.5ms | Symmetrical balance tick |
3. Why Pre-Shipment Quality Control Matters
Inspecting machine data prevents disappointment upon delivery. For a comprehensive look at how inspection safeguards your investment, review our detailed article on What is Watch QC? Pre-Shipment Quality Control Matters .
[/text]Want Guaranteed QC Video Checks Before Shipping?
Connect with our Angelawatch specialists on WhatsApp to explore our meticulous pre-shipment inspection process.
Chat on WhatsAppFrequently Asked Questions
Q: What is an acceptable daily rate for a high-end replica watch on a timegrapher?
A: A daily rate between -7 and +15 seconds per day is widely considered standard and acceptable for mechanical movements.
Q: Why is amplitude important when reading watch QC numbers?
A: Amplitude measures the swing rotation of the balance wheel. Healthy mechanical movements typically show an amplitude between 270° and 310°.