Hi all, Some one asked me for a balance staff for an 18s Elgin grade 7 and grade 15 Looking up in the Elgin data I came up with an X236 and X241 But have no idea how that compares with a 1901 857 etc Can anybody help with a cross reference table
Mel
mrmel.mrmel@gmail.com

Mel, I understand you are requesting information (if it exists) for an Elgin Balance Staff cross-reference,

Regarding the staff numbers (X236, X241) you refer to, they differ from My Elgin Cross reference which lists balance staffs for Grades 7 and 15 as #857 and #860, respectively.

The 860 has changes to the waist length (or something) which precludes its use where an 857 is specified.

Hi David
#857 is just used here as an example of what I am looking for.
So to restate my question is there a cross reference for.
I have the Elgin Grade numbers IE 7 and 15, going to the reference in other areas I get a staff X236 and X241. These numbers are unfamiliar to me. I know of numbers Like an Elgin 857 SR (DR) , or a 1903, or a 1903A etc. Does the X236 or X241 cross wth any of these or are they different entirely?
mrmel.mrmel@gmail.com

Mel,
Are you sure these are staff numbers.I find the numbers X236 and X241 are numbers for an Elgin balance wheel..Gary

No I am not sure .
I will go back and check.

Of course u guys are right #857 and #860
I feel so stupid
I am almost afraid to ask LH SH

LH long hub, SH short hub, NS new style, OS old style, etc. Like parts for a 1/2 year ford.

Hi And thanks for the clarification.
But I was really asking is which staff each grade takes.

Original material cabinet I have from Elgin watch co. has 8 variations of #857.

OS 5.97mm OAL
NS 6.10mm OAL
SH 1.29mm
LH 1.54mm
pivot 11,12,13,14.

Many possibles without a sample to measure.