The lumen of a needle is a measure of the light-gathering capacity of a optical device, such as a lens or a fiber optic cable. It is typically expressed in terms of the number of individual light rays that can pass...
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Vera Sandlin
Vera Sandlin is the founder of uptowncraftworks.com, a website dedicated to helping crafters find the materials and tools they need to create beautiful and unique handmade items. Vera has been crafting for over 15 years and has a passion for creating unique and special items that can be enjoyed by others.