Description
This article is from the Locksmithing
FAQ, by Joe "Spike" Ilacqua spike@indra.com and Henry Schaffer
hes@ncsu.edu, major data collection effort by Scott Anguish
sanguish@digifix.com with numerous contributions by others.
18 Is there a formula that can find the combination of a Master Lock?
Not as far as anyone knows. I.e., the combination is not derived
from the serial number. You can buy code books with which
will tell you the combination for a given serial number, but these are
big rather expensive books that list (nearly) every lock.
However it may be possible to obtain the combination from Master Lock.
Additionally, John F. Bousquet <bousquet@crl.com>writes:
There is another way. There is a shirt picket sized formula book.
From the serial number you determine which of several progressions
were used by the factory. Then a guide number is found from the
table to divide into the serial number and a remainder is found.
This is referenced on a page in the guide. The last digit is
manipulated and that narrows it down to about 5 possibilities. I
bought one of these 20 page pocket Try out combination finders and
never wound up using it. Now I just call it up on notebook computer.
An inside view of a Master-type lock shows how it works.
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Tags
crafts, locksmithing, lock, master keying, jiggler key, skeleton keys
