How to measure a watch Crown

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How to measure a watch Crown

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What is a watch crown

• It is the button on the end of the spindle that
  is used for adjusting the time and/or date on an
  analogue (non digital) watch. In older watches
  and pocket watches which are not powered by
  batteries it is also used to wind the watch
  spring to give it power.

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Why do we measure watch crown

• There are many reasons that you might measure
  your watch crown and there are a few different
  ways of obtaining the measurement that we explain
  below. Replacing a watch crown is a common repair
  on a wrist watch or pocket watch because they
  usually stick out from the watch and are bumped
  and bent causing breakage.

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Measure a Waterproof Quartz Watch Crown
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Step 1

• Using a digital mm gauge measure the outside
  diameter of the old crown. This measurement will
  indicate the size of the crown needed.

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Step 2

• Using a watch crown gauge find the opening of the
  crown by trying each crown on the posts until
  finding the post the crown fits onto.

OR

• Use a digital gauge to measure the outside
  diameter of the case tube sticking out of the
  case.

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STEP 3

• Using a digital watch gauge measure the outside
  diameter of the threaded portion of the stem.
  This will indicate the tap of the crown needed.
  Or look up the movement number to identify the
  thread tap or size.

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STEP 4

• Determine the color of the crown.

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STEP 5

• Determine flat top or domed top.

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Contact Us
For more information on watch repair kit

• AddressWatch Parts Outlet607 South Hill St.
  Suite 448Los Angeles, CA 90014
• Telephone[phone]Fax[phone]

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