Mineral Glass (Rough Edge) Convex Clock Glasses

Convex clock glasses are in traditional imperial sizing and a 1/16th plus or minus allowance must be allowed when ordering.

For how to cut holes in glass easily, please see the video link above.

Doming Heights:
  • For all non sternkreuz (MMG) convex glasses allowances must be made as due to the manufacture process, doming is inconsistent

MMG Interior Doming Heights:
  • Up to Ø60mm = Doming height 5 - 6mm
  • Up to Ø70mm = Doming height 6 - 7mm
  • Up to Ø90mm = Doming height 7 - 8mm
  • Up to Ø100mm = Doming height 8 - 9mm
  • Up to Ø120mm = Doming height 8.5 - 10mm
  • Up to Ø140mm = Doming height 10 - 11mm
  • Up to Ø160mm = Doming height 11 - 12mm
  • Up to Ø170mm = Doming height 12 - 13mm
  • Up to Ø180mm = Doming height 13 - 14mm
  • Up to Ø190mm = Doming height 13 - 15mm
  • Up to Ø200mm = Doming height 15 - 16mm
  • Up to Ø210mm = Doming height 16 - 17mm
  • Up to Ø220mm = Doming height 18 - 19mm
  • Up to Ø240mm = Doming height 19 - 20mm
  • Up to Ø260mm = Doming height 20 - 21mm
  • Up to Ø300mm = Doming height 22 - 23mm
  • Up to Ø330mm = Doming height 24 - 25mm

Barometer Glasses requiring holes need to be drilled using our diamond coated core drills (see items D47369).
  • 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

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