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Westclox Clock Glass Lens Sizes
I provide this web page to assist those who repair old Westclox clocks. ClockHistory.com is
not a parts supplier - please do not ask us for parts. The fine clock parts suppliers listed on my links
page will be happy to send you a catalog if you would like to order new glass lenses.
If you know of anyone that sells old Westclox parts,
and I will put the information on this web page.
Big Ben and Baby Ben Glass Chart (and a few other models)
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Baby Ben
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Style 1 & 2
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2 7/16"
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Flat
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Baby Ben
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Style 3
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2 33/64" (2 1/2 inch convex will fit if original type is not available)
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Low-rise convex
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Baby Ben
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Style 4
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2 1/2"
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Convex
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Baby Ben
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Style 5
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2 5/8"
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Convex
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Baby Ben
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Style 6
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2 25/32" (2 3/4" will work)
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Convex
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Baby Ben
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Style 7
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Plastic with pointed center (1956 - 1960)
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Baby Ben
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Style 7
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Plastic with rounded center (1960 - 1964)
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Baby Ben
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Style 8
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Plastic
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Baby Ben
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Style 5 Electric
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2 13/16"
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Convex
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Big Ben
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Style 1 & 2
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4 11/16"
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Flat
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Big Ben
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Style 3
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4 1/8"
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Flat
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Big Ben
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Style 4
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4 1/8"
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Convex
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Big Ben
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Style 5
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4 1/4"
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Convex
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Big Ben
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Style 6
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4 1/4"
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Convex
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Big Ben
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Style 7
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Plastic with pointed center (1956 - 1960)
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Big Ben
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Style 7
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Plastic with rounded center (1960 - 1964)
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Big Ben
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Style 8
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Plastic
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Big Ben
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Electric model
820 & 830
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3 9/16"
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Convex
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Big Ben
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Electric model
840
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3 15/16"
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Convex
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Big Ben
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Electric model
S6-B
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4 5/16"
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Convex
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Bull's Eye
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Leg model ca. 1913
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4 1/4"
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Flat
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Dura Case
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Non-luminous models
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2 33/64" (2 1/2 inch convex will fit if original type is not available)
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Low-rise convex
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Greenwich electric ca. 1936 - 1939
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S1-D, S1-G
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3 15/16"
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Convex
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Ironclad
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2 13/16" (2 3/4" will work but is a bit small)
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Flat
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Moonbeam
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S5-J
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3 15/15"
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Convex
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Sleep-meter
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Leg model
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3 7/8"
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Flat
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Westclox glass chart from 1940’s catalog of Michigan Jeweler’s Supply, Detroit
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