A watch with a rotating face rather then hands..,

[rpguk]

I saw a watch a while ago and it had a viewing port on the front with two (perhaps three) rotating discs inside and presumably attached to a regular clockwork mechanism instead of hands.

The hour would have been the outer disc with the minutes being inside so the time was always displayed in the middle of the window.

In this case it was quite an old looking watch.

Anyone know what this type of watch is called? And what the downsides are? I assume there must be some if these watches aren't more widespread.

[TheEnd]

I know the ones, ebay usually has plenty, not sue of an actual name for the type though

[Civpilot]

The usually go by the name of "Jump hour" watches

[CommanderJameson]

Mechanical digital watches.

Like this

[johnfm]

• rather than, surely.

[rpguk]

Civpilot said:

The usually go by the name of "Jump hour" watches

Bingo, that's what I was after.

I presume the downside is that they use more energy and thus knacker out batteries?

[TheEnd]

It's not exactly a jump hour by definition, those are ones where the hour hand snaps to an hour marker, and stays there until the next hour, a famous example is Franck Muller's Crazy hours, where the jump is about 3 regular hours at a time.

Most of those dial indicator watches will be jump hours, although as luck would have it, the pic above is a rare non jump hour version (with the hours mid-way between 2 and 3

[rpguk]

Ah, that would make sense

[S2_DPD]

I have LIP Mythic Jump Hour in black leather within green detail.

http://www.watchismo.com/lip-mythic-jump-hour-gree...

I like the history of LIP and the look of the watch on.

On the downside, the digits are small and tricky to read, so I tend to wear it when I don't have to tell the time in a hurry!

For the times I may need to tell the time at a glance, I wear a Mondaine...

http://www.mondaine.com/mondaine-watches/display/1...