French Brocot clock c19 require info.

[Raymond101]

Hi, just acquire a French Brocot clock movement. It's had a ruff life and very dirty. As I was taking the pictures it started ticking.
I want to know how you calculate the old French inch I read somewhere It's 1.066 new inch .
The marking is 6 9 I figured it's about 6.75 inch apx .
The suspension spring is missing but I will make a new one .
I guess the date to be around 1860 or a little before. As it has the old type metal pins half moon in the Brocot.
The case rim has DV stamped before & after the serial number .
DV 28853 .. Is this a date or ?
pendulum 6 9 like to know what this is, exactly in New inches or mm.
I guess it being about 6.75 inch.
All info welcome.

 

[new2clocks]

Please show a picture of the back of the movement.

Regards.

 

[Raymond101]

Please show a picture of the back of the movement.

Regards.

Just uploaded the back refresh

 

[JTD]

I think you meant to write 19c in the title. I am sure a moderator will alter it for you,

The case rim has DV stamped before & after the serial number .
DV 28853 .. Is this a date or ?

No. It's a serial number.

pendulum 6 9 like to know what this is, exactly in New inches or mm.
I guess it being about 6.75 inch.
All info welcome.

This is the measurement in old french inches, (pouce and ligne). Your not far off with 6.75 inches.

JTD

 

[Raymond101]

Ok thanks. Sorry about c18 yes c19
Thinking 1850 / 60 . .
Thanks for verification on the 6 9
I used 1.066 x 6 .. & 9 (9/12) 3/4 pouce..
Now to strip it down and clean it.