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Message |
    
Johnlees45
Tinkerer
Username: Johnlees45
Post Number: 46
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 29, 2007 - 03:02 am: | 
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I have dug out my father's old Weston Master ll (Latin two) universal exposure meter (Model S141/735) and although it must be over 40 years old it still basically works but the needle is sticking in the left-hand side of the scale and I have to jolt it to free it. It does not appear to be touching the glass, so that isn't the problem. Adjusting the zero calibration screw makes no difference.
I can't see a way into this thing so does anyone know how to get in to the "works" to find out what's wrong.
Second question:- How do the "Weston Film Speed Values" relate to ASA film speeds. (I have the manual and the film speed values booklet but I just can't work it out.) ASA is barely mentioned in them (nor DIN).
Many thanks for any advice, John. |
Charlie
Tinkerer
Username: Charlie
Post Number: 80
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 29, 2007 - 05:43 am: |
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As I remember, the Weston number is 80% of the ASA number - for 100 on th film box st 80 on the Weston. |
Aford
Tinkerer
Username: Aford
Post Number: 9
Registered: 03-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 29, 2007 - 05:04 pm: |
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Film Speed Values
ASA Weston
100 = 80
200 = 160
400 = 320
You must remove the label on the back (2 screws) this exposes 2 larger screws inside. Most of these old meters have sticky needles and need a tap. Don't mess with the hair spring assembly its very delicate.
Alf |
Johnlees45
Tinkerer
Username: Johnlees45
Post Number: 47
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 30, 2007 - 11:13 am: |
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Many thanks, Alf, for that information. |
Johnlees45
Tinkerer
Username: Johnlees45
Post Number: 48
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, July 01, 2007 - 01:46 pm: |
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I have found out that the original manufacturers are still in business albeit with a different name. The meter is going off for a professional service/repair at roughly 10 times what it cost to buy initially ! |
Johnlees45
Tinkerer
Username: Johnlees45
Post Number: 51
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, July 07, 2007 - 01:10 pm: |
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Meter has been repaired professionally and is now in use.
John. |
