The Vintage Unbranded Surveying Tap Tool is a rare and collectible piece of equipment from the early 20th century. This unique tool was used in the field of surveying, making it a valuable artifact for enthusiasts and collectors alike. The unbranded design adds to its charm and authenticity, making it a sought-after item for those interested in vintage surveying equipment. Its historical significance and practicality in the field of engineering make it a valuable addition to any collection. I do not know the length I think about 50'. Email with questions. Good luck to all.