| Home | |
About the Guild | |
Retailers Directory | |
Manufacturers Directory | |
Board of Directors |
 |
 |
| How to Buy a Watch |
 Yachting & Diving Water resistant watches�the case, crown, push buttons and crystal of a watertight watch are made in such a way that no dust or water can penetrate, providing longtime protection of the internal parts. Water-resistant watches should be tested once a year and opened only by a qualified watchmaker. Most manufacturers avoid the term �waterproof� as no internal standard has been devised. Waterproof is not a legal term in the US. Water resistant watches can have the following feature: Screw-lock crown�a crown that can be screwed into the case to make the watch watertight. Tidal watches�indicate high and low tides. A must for yachtsmen. Yacht timer �a countdown timer (see �count-down timer�) that sounds warning signals during the countdown to a boat race. Diver�s watches �watches able to withstand water pressure up to a specific depth without incurring damage. These can have the following features: Depth sensor/meter�a device on a diver watch that determines the wearer�s depth. Depth alarm�an alarm on a diver�s watch that sounds when the wearer exceeds a pre-set depth. In most watches it stops sounding when the diver ascends above that depth. ATM�1 atm. is the pressure of 1kg/cm2 and corresponds to 10 meters of depth. Altimeter�a device that determines altitude by responding to changes in barometric pressure.
Download PDF |
|
|
| 257 Adams Lane, Hewlett NY 11557 Phone: 516-295-2516 - Fax: 516-374-5060 - [email protected] | |||||
| Site by ValueForms [email protected] | |||||
