Round Convex Clock Glass


Round Convex Clock Glass

Round convex clock glass gets measured from one side to the other, the overall width. When working with a clock bezel it is important to order the right sized clock glass. If the glass is too narrow it will fall out the front of the bezel.

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BZ2: $10.00$70.00
Movement Info TabsDials and NumeralsDial DrillingAbout BezelsDials for spring unitsFitting Clock Glass

Please view these tabs for information on clock dials that Clockworks offers and all the variations available.

Clock Dials and Numerals

Clockworks offers a variety of shapes and colors of clock dials and numerals. Of course the dials come in round, square, moon top and more. Many of the round clock dials have a choice of white, ivory or gold.

Create a new dial out of any type of material and then use the numerals to finalize the look. Most of the numerals are plastic, however we do offer two different sizes of gold aluminum numerals. These are generally for Grandmother and Grandfather clocks. The aluminum numerals need to have epoxy to hold them in place. They do not have sticky backs like the plastic clock numerals. Here are some tips to order the correct clock dial and numerals.

Arabic or Roman Numerals

Clock dials and numerals come in either Roman or Arabic. Roman numerals on clock dials are the kind that have letters to represent the numbers. For example, the 12 would be XII and five is written as V and so forth. The number 4 was IV in roman numerals, however the new style is IIII. This new style is popular with clock inserts. However, it is also becoming the norm on all clock dials. Arabic numerals are just the regular numbers where 12 is written as 12. Arabic is all numbers and no letters on the clock dial.

Sizing and Time Tracks

Clock dials come in many sizes in an attempt to cover many case styles. The sizes in the list are the overall diameter from side to side. Often there is another measurement known as the time track. A time track is the small ring that travels around the clock dial just outside of the clock numbers. In other words, the time track is the measurement of the dial from outside the 3 to outside the 9. Clock hands are usually half of the clock dial diameter. So clock dials and numerals will come in variable sizes to accommodate various case styles.

Clock Dials and Numerals - Types of clocks

Use these numerals on any type of dial providing the size is correct and it looks appropriate. We recommend using extra epoxy on the sticky numerals because they tend to fall off easily. The hardest clocks to find a dial for are the antique mantle clocks. These take a bezel and glass combination that often installs on the dial itself. Use your best judgement on what clock dials and numerals look best.

Clock dial information-drilling description

Description of what it means to require drilling of the clock dials. Clock dials often only have the center hole for the clock hand post to come through. If using a spring driven mechanical clock movement, holes need to be drilled. This is so the clock key will have access through the dial to wind the clock. This hole is typically 3/8 of an inch wide. Please continue to read the following text for more clock dial information-drilling descriptions.

What is a time track

A time track is that outer ring that runs around the numerals. Mechanical clock hands and battery run clock hands use the time track as well. Hence, the measurement of the time track dictates the length of hands to get.

About dial grommets for Clock Dial Information-Drilling Description

A dial grommet is a decorative ring that gets inserted into the winding hole to make it look pretty. Of course, it is a metal ring with prongs on the back to fold behind the clock dial. Thus, mounting the grommet via friction fit only. Dial grommets have a 3/8 hole in the center. In some rare situations it is 1/2 inch.

Drilling Service

Drill the clock dial to wind a mechanical clock movement with a key. Use dial grommets for a nice finish on the new winding holes. Naturally, Clockworks can drill this before shipping for a fee. So if this is of interest, please email us.

Paper Clock dial information

The paper dials on this page come square but have a round time track. Use spray glue to stick the paper stock dial onto a thin board for a dial. If the dial is to be round instead of square it will require cutting into shape.

Round clock dial information

The round metal dials may come with a protective plastic coating. Sometimes it is hard to tell it is there so if the dial seems to have scratches, it most likely has this coating. This needs to be taken off for the finished clock project.

About clock bezels for Clockworks Clock Dial Variations

It can be confusing sometimes to get the bezel and then the glass and then the dial all separate and try to put them all together. It is best to get the bezel glass and dial all together whenever possible. However there are only a certain number of available sizes for these complete units. So as much as it is never a recommendation to try and piece meal the parts, sometimes it is a necessity. It does happen that individual components need to be bought and then match them all together.

Spring driven dials

If you have a spring driven clock, drilling holes in the dial will have to be done to wind the clock. We offer clock dial grommets to make the holes pretty after the drilling is done. The holes need to be 3/8 of an inch wide, which is the standard width.

Fitting clock glass for Clockworks Clock Dial Variations

The glass has to fit into the bezel and it has to be a perfect fit. Not too small so it falls out of the bezel and not so big it will not fit into the bezel clips. For the proper size glass, measure exactly how wide you would like the glass from the back of the bezel. In other words, turn the bezel over and measure across the inside lip of the bezel where the glass sits. Remember, the glass tabs have to secure it in place. Get one that will not be too big for the bezel clips and not so small it falls out the front.

Round Convex Clock Glass

Round convex clock glass gets measured from one side to the other, the overall width. When working with a clock bezel it is important to order the right sized clock glass. If the glass is too narrow it will fall out the front of the bezel. When a clock glass that is too wide is ordered, the tabs on the back of the bezel will not be able to fold over to hold it. It needs to be between these two extremes and fit nice and be held in by the bezel tabs.

Additional information

Weight0.2 lbs

4 Inch, 4 1/16 Inch, 4 1/8 Inch, 4 3/16 Inch, 4 1/4 Inch, 4 5/16 Inch, 4 3/8 Inch, 4 7/16 Inch, 4 1/2 Inch, 4 9/16 Inch, 4 5/8 Inch, 4 11/16 Inch, 4 3/4 Inch, 4 13/16 Inch, 4 7/8 Inch, 4 15/16 Inch, 5 Inch, 5 1/16 Inch, 5 1/8 Inch, 5 3/16 Inch, 5 1/4 Inch, 5 5/16 Inch, 5 3/8 Inch, 5 7/16 Inch, 5 1/2 Inch, 5 9/16 Inch, 5 5/8 Inch, 5 11/16 Inch, 5 3/4 Inch, 5 13/16 Inch, 5 7/8 Inch, 5 15/16 Inch, 6 Inch, 6 1/8 Inch, 6 1/4 Inch, 6 3/8 Inch, 6 1/2 Inch, 6 5/8 Inch, 6 3/4 Inch, 6 7/8 Inch, 7 Inch, 7 1/8 Inch, 7 1/4 Inch, 7 3/8 Inch, 7 1/2 Inch, 7 5/8 Inch, 7 3/4 Inch, 7 7/8 Inch, 8 Inch, 8 1/8 Inch, 8 1/4 Inch, 8 3/8 Inch, 8 1/2 Inch, 8 3/4 Inch, 9 Inch, 9 1/4 Inch, 9 1/2 Inch, 9 3/4 Inch, 10 Inch, 10 1/4 Inch, 10 1/2 Inch, 10 3/4 Inch, 11 Inch, 11 1/4 Inch, 11 1/2 Inch, 11 3/4 Inch, 12 Inch, 12 1/4 Inch, 12 1/2 Inch, 12 3/4 Inch, 13 Inch, 14 Inch, 14 3/8 Inch, 15 Inch, 15 7/16 Inch, 18 3/8 Inch

Ask a Clock Question

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Gail Sackmaster
Gail Sackmaster

will your convex glass fit a Howard Miller wall clock

Jeri Lucille Pearson
Jeri Lucille Pearson

The clock I have still has the metal bracket for the glass, so I just measure the inside measurement to determine the glass size?

Scott taylor
Scott taylor

Hello how tall is the dome on convex 5″ circle

Jeri Lucille Pearson
Jeri Lucille Pearson

it’s 6 inches, appears to be a perfect circle in diameter.

Colin Brown
Colin Brown

What is the thickness of this glass?


What is the internal height (concave side) of a 11.25″ round convex glass? To measure, use a straightedge across the center of the concave side, and measure down to the center of the glass with a tape measure.