The Vernier Ball Micrometer is an economical tool for handloaders who want to measure case neck thicknesses with accuracy and precision. It features an all-metal body and thimble with a matte finish, giving it a durable and long-lasting design. The micrometer's range is 0-1 inch, with accuracy within 0.0001 inch, providing precise measurements every time. All-metal body and thimble Range is 0-1 inch, with accuracy within 0.0001 inch Ratchet stop on thimble Thimble lock keeps the thimble from turning Adjustment wrench and storage case included