Horology

You will find a lot of illustrations which descibes the complex watch mechanism and knowledge plainly.

Chronograph

"Chrono-graph" is watch with stop-watch function
Illustrated glossary

Start, Stop, Reset
detail illustrations

Column or Cum
Vertical crutch or Swinging Pinion
more chronograph mechanism

Famous chronograoh movement calibers

From developmenr of stopwatch to automatic chronograph

Calculate by Rotating bezel built-in Pilot Watch

Chrono caliber Spec Table: Old model / Latest model

	Dial and Hands How to indicate time on Dial	Wheel Train Motion works from Mainspring	Balance and Escapement How to keep time regulary
	Mainspring and Barrel How to supply to Wheels	Keyless Works Winding and Hand-setting
Free-sprung balance illustrated (Micro-stera screw, Gyromax etc.)
Regulator (ETA-chron, Trio-vis etc.)
Adjustment

	Why Mechanical how attractive mechanism and quality	FAQ よくある初歩的疑問、この際キレイに解決いたします。	TOKEI ZANMAI Watch Quiz Japanese only 4 level Ranking
	Quality Certification Some Chronometer Geneve Stamp QUALITE FLEURIER etc.	Swiss Watch Finishement More traditional handcraft for watches	Watch Tools Swiss BERGEON tools and Timegrapher
Overhaul and Restoration
Watch diameter conversion table (Line/Size/mm)
Watch Case Material
Glossary