Minute Machine date ring

[mjt42]

I am curious as to how the date ring works on my MM. I am familiar with a single piece date ring which is numbered from 1-31 but I have noticed on my MM that the right hand digit moves independently of the left one.

 

[shofzr]

When the disk on the right goes past "0" a " finger" advances the disk on the left.

 

[shofzr]

Looks like the Minute Machine uses this style "Big Date" calendar set up

When the lower disk (seen through the cutout in the upper disk) reaches 9 it advances the upper disk.

 

[mjt42]

i was going to tag you in my post having seen you wearing your jewellers loupe! many thanks for your reply!

 

[mjt42]

Looks like the Minute Machine uses this style "Big Date" calendar set up

View attachment 150367

When the lower disk (seen through the cutout in the upper disk) reaches 9 it advances the upper disk.

this one makes sense. i couldn't get my head around what was happening on the 20 and 30 - i am actualy only seeing the one (upper) disk on them dates.

 

[shofzr]

Here are a couple more under the hood views of the calendar setup

Cheers

 

[mjt42]

great stuff - thanks!

 

[kronin323]

A professional...