The external diameters of all our glasses are given. Due to the various fitting and seating applications possible, it is not possible to recommend a specific clock bezel for each glass.

Barometer Glasses requiring holes need to be drilled using our diamond coated core drills (see items D58557).

• Ideally used with a drill press
• Or a wooden template with a hole the same size to start
• You will need to use water to cool the drill bit
• See You Tube Link: https://www.youtube.com/watch?v=U_NtTBTGp20