how to choose Quartz wall clock bell needle length? First, we measure the radius of the disk clock, then decide the needle of the clock dial depending on the length of the radius, the needle length is more suitable when it’s the 4/5 of the bell disc radius (also regarding to the clock dial on the design, because some the digital design of the dial is relatively large, so the length of the clock will be slightly shorter).
How to measure the length of the clock needle? Clock length from the center needle hole to the amount of clock clock longest needle ends, rather than the entire amount of the length of a clock hand. Some friends may ask why the length of the clock is from the center hole to the longest end of the clock , not the total length of the clock. It’s because
1. There are some clock pin adding part of the tail are designed to increase the overall appearance,
2. Minute over 200 mm with the tail on the clock hand is to keep balance of the needle of the clock so they can avoid pouring the pointer during the slide down, which will not be accurate.
3. Clock central bore needle is mounted in the middle of the bell panel, it will be more clear if the needle’s length is depending on the radius of the clock.
In watch industry, the size of the clock needles generally measures the minute hand, the size of hour hand is according to the size that match the minute hand, second hand and the minute hand can be of considerable size. However, to ensure stability, a radius of more than 150mm clock only seconds Head will be given.
The information above will help you to choose the appropriate needle length bell in the bell accessories market.
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