This item is over 50 years old, so I cannot determine if it is usable. I am not an expert, so please check the images. The name is written in alphabet on the back of the box as it was passed down from an acquaintance. Please understand and accept all aspects of the item before purchasing. Vintage drafting instrument set made by N.S.D., made of metal and plastic, with a storage case. - Brand: N.S.D. - Item Type: Drafting instrument set - Materials: Metal, plastic - Accessories: Storage case - Intended Use: Drafting, design - Condition: Vintage - Colors: Silver, black, white Thank you for viewing.