Fire-resistant watchglass roughly 150 mm in diameter

The maximum height of the flame in cm above the base of the watchglass

The watch crystal is the transparent cover over the face of the timepiece.

Since 1841, the factory has produced watch crystals specifically for the Swiss watch industry.

The vacuum panels and/or the container in a profile view may form an hourglass shape.

Stir with the glass rod, which should be left in the beaker, and cover the beaker with a watchglass.

The graduated scale is positioned exactly behind the watchglass and held vertically by means of a support and clamp.

By using such a substrate as the dial or the windshield glass, a watch with a solar cell free from restriction on the design of the dial can be produced.

The scale is positioned in such a way that its origin is on a level with the watchglass base in a horizontal plane.

It is therefore much more scratch-resistant than any other watch crystal.

In this article, we’ll look at how to select the right glass for the occasion.

Cover the beaker with a watch glass and leave to stand for one hour at 25 (± 2) °C.

An extremely hard and scratch-resistant material used to make watch glass.

The chassis may include an extensible formed web material.

Place the beaker, covered with a watch glass, in a boiling hot water bath (5.2) for an hour.