Screw (or 'Edison') based lamps are measured across the base and generally come in the following sizes:
5mm E5 Lilliput Edison Screw (LES)
10mm E10 Miniature Edison Screw (MES)
12mm E12 Candelabra
14mm E14 Small Edison Screw (SES)
17mm E17 Intermediate
26mm E26 Medium Skirted
27mm E27 Edison Screw (ES)
40mm E40 Goliath Edison Screw
For example…
If the bulb you are replacing is say: 12 volt, 30 watt has an Edison screw base like the photo above, which measures 14mm across, then it is known as:
12V 30W E14
Different Screw Based Lamps
Now you have established the base type and size, look at the following photos to see which most resembles your lamp, then click on the image to see what's available. If you cannot find your exact requirements, please telephone our friendly sales team on: 01279 600700 and they will be happy to locate it from our non-online stock or through one of our subsidiary companies.
Unfortunately the search has not found the product that you are looking for, but do not despair, we probably have it listed under a different reference.
Please call our sales team on 01279 600700 who will be able find what you require and even complete your purchase over the phone.