This is the original lecture given by Dr. Matthew Clark on the topic of isochronism and positional adjustment. Dr. Matthew...
Horological Times
This is the original lecture given by Dr. Matthew Clark on the topic of Hairspring Dynamics for American Watchmakers-Clockmakers Institute...
Recent Comments
I bought the initial version of the Wasson field watch w/ the R150 in it.…
V8 = S = swiss made
I can confirm that the ETA G10.212 movement is indeed used on the moonswatch, according…
Used in Invicta I-Force 3330 (2011 variant)
Will do... I did not know that they'll stamp the movement caliper on the surrounding…
Have one in my Hamilton Khaki Aviation. Keeps fantastic time. Crown and stem move smoothly,…
I asked YEMA directly about the reason why cmm.10 has second stop and cmm.20 not.…