Fashionable Watches

Clock Inserts for Clock Making – Find the Right Fitups

Clock Inserts for Clock Making – Find the Right Fitups

If your clock is made with one of these insert
clocks or fit-up clocks, then replacing the fully assembled clock module can be easy.
The clock hands, clock face, quartz movement, lens and case are already assembled into a
single unit. You just have to take a couple of measurements and press the insert into
the round mounting hole in your clock case. Clock inserts or clock fit-ups are fully assembled
clock parts that pressure fit into a pre-drilled hole. It’s the easiest way to make a nice
clock. Your primary concern is the hole size in your case. The secondary concern is the
diameter of the front, or the visible part when in use
Please do not make the mistake of assuming that these parts are standardized in any way.
They are not. You need to be able to measure pretty carefully. If your insert is just a
little loose you can usually work with it. If it won’t fit into your mounting hole
at all, then you have a problem. This is our popular 3 ½ inch insert that
fits into a 3 inch mounting hole. It’s our BI752 series. If you doing
a replacement then here is where we really need your attention. There are two really
important measurements here. The first is diameter of the face, or visible
part from edge to edge. This measurement is what the size of the insert clock is based
on. In this case it’s 3-1/2 inches. Often there is a little flexibility on this dimension,
depending on the design of your clock case. You might be able to go up or down ¼ of an
inch without noticing. Usually there’s a little flexibility on the
size of the clock face. There is very little flexibility on the diameter of the mounting
hole. If the insert is just a little loose in the mounting hole, an extra gasket or wrapping
the back with electrical or plumbers tape works well to adapt to a slightly larger hole
size. For example: Our 3-1/2” inserts normally
fit into a 3” mounting hole. If you have a 3-1/8 inch hole, it be a little loose; like
this. But you could add a flexible gasket like our DCMOUNT2 onto the back and it’ll
hold in place. You can also use things like plumbers tape or electrical tape to build
up the back of the insert clock. If a wider adaptation is needed, a somewhat
skilled woodworker could make a “wooden doughnut”, on a scroll saw, that could be
glued in place to adapt to a larger hole size. I normally use scraps of “one inch, one
by” pine for this purpose with some wood glue. Please refer to the profile drawing for each insert clock shown on our website and catalog
for accurate dimensions to make these choices. Let us help you find the right part. Contact
us at 888-827-2387 or on This is Mike Brosman for
I trust this helped you to Learn How To Choose The Right Insert Clock or Fit-up For Clock
Repair, by taking some of “the mystery” out about what to measure.

Reader Comments

  1. I'm having trouble finding an insert that will fit.  My unit has a 7 inch diameter hole.  And the (broken) clock measures about 7.75" (including the overhanding flange).  Got any suggestions?  I'm desperate.  Thanks!

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