A ruler can also be used to measure the shaft length if you do use a ruler to measure the shaft size make sure the ruler starts at 0 many rulers have their zero point a bit away from the end of the ruler.
How to measure a wall clock.
You will find that most clocks fit the size of 15 to 45cm in width.
Measure your clock the very first step in determining clock hand size is to measure the diameter of your clock face also known as a clock dial.
This may seem like a big gap between sizes but you must consider the size of the hands of the clock on average as this is solely responsible for dictating the final dimensions of the wall clock.
There are plenty of features which dictate how big or small the standard wall clock should be.
This will give you the movements total shaft length which will be needed when ordering a replacement clock movement.
What size wall clock should you choose.
Measure the outside diameter of the clock dial.
Grab a tape measure or ruler and measure from the outside diameter of the time ring on your clock dial also called a clock face as shown below.
Choosing the size of your timepiece is largely dependent on both the wall size and the type of statement you are trying to achieve.
Divide the outside diameter by two.
If there is no time ring measure from the outside edge of the numerals or markers.
Use a ruler to measure the outside diameter of the time ring.