A concealed shaft and gear assembly takes care of that. For every full rotation of the minute hand (actually the white ring), the hour hand is only permitted a relative advancement of 1/12th of a ...

So the clock should show 10:25 instead of moving hands to the 10 and the 5. Most of the clock is made of up stacked gear assemblies, geneva drives , and many bearings.

"If someone can't draw a clock, then I would want to do further testing." Ontario adopted the clock-drawing test in 2014 as part of its mandatory education program for drivers of ages 80 and up.

I watched my mother draw a clock while she was in a brain rehabilitation centre after her stroke. Until then, I did not know how common a test it was, how often it was used – or why.

A neurodegenerative disease, dementia leads to memory loss, confusion, and impaired speech, impacting daily life. Early detection is vital, and a simple "clock-drawing method" can serve as an ...