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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)

Baby Ben Style 1 & 2 2 7/16" Flat
Baby Ben Style 3 2 33/64" (2 1/2 inch convex will fit if original type is not available) Low-rise convex
Baby Ben Style 4 2 1/2" Convex
Baby Ben Style 5 2 5/8" Convex
Baby Ben Style 6 2 25/32" (2 3/4" will work) Convex
Baby Ben Style 7 Plastic with pointed center (1956 - 1960)  
Baby Ben Style 7 Plastic with rounded center (1960 - 1964)  
Baby Ben Style 8 Plastic  
Baby Ben Style 5 Electric 2 13/16" Convex
Big Ben Style 1 & 2 4 11/16" Flat
Big Ben Style 3 4 1/8" Flat
Big Ben Style 4 (Chime Alarm) 4 1/4" Convex
Big Ben Style 4a (Loud Alarm) 4 1/8" Convex
Big Ben Style 5 4 1/4" Convex
Big Ben Style 6 4 1/4" Convex
Big Ben Style 7 Plastic with pointed center (1956 - 1960)  
Big Ben Style 7 Plastic with rounded center (1960 - 1964)  
Big Ben Style 8 Plastic  
Big Ben Electric model
820 & 830
3 9/16" Convex
Big Ben Electric model
840
3 15/16" Convex
Big Ben Electric model
S6-B
4 5/16" Convex
Bingo Leg Model Style 1 4 1/4" Flat
Bull's Eye Leg model ca. 1913 4 1/4" Flat
Dura Case Non-luminous models 2 33/64" (2 1/2 inch convex will fit if original type is not available) Low-rise convex
Greenwich electric ca. 1936 - 1939 S1-D, S1-G 3 15/16" Convex
Ironclad   2 13/16" (2 3/4" will work but is a bit small) Flat
Moonbeam S5-J 3 15/15" Convex
Sleep-meter Leg model 3 7/8" Flat

Westclox glass chart from 1940's catalog of Michigan Jeweler's Supply, Detroit

Glass chart  from around 1940
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