The Starrett 190B extension base is used with the Starrett 190 Little Giant jack screw (sold separately) for places where it is not possible to obtain a bearing on a flat surface. The extension is 2" hi...

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Product Review

The Starrett 190B extension base is used with the Starrett 190 Little Giant jack screw (sold separately) for places where it is not possible to obtain a bearing on a flat surface. The extension is 2" high.

The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company, founded in 1880, is headquartered in Athol, MA.



  • Best Performance - Little Giant Jack Screws are used for leveling work on planer beds, drills, setting up machinery, and general use in toolrooms or machine shops.
  • Easy to Use - Incorporating convenience and excellence, Starrett tools are designed to be user-friendly. Whether you're an experienced professional or an amateur when it comes to home improvement, our tools are handy and accessible.
  • Quality Assurance - Starrett tools are made with the highest standards of quality and workmanship, providing fine precision tools for industrial, professional and consumer markets worldwide.
  • The Perfect Accessory - Used in a wide variety of industries as an essential part of metalworking and woodworking, Starrett tools can be used in various applications and offers unparalleled service with execution like no other.
  • The Standard for Excellence - Manufacturing quality tools that provide consistent and reliable performance since 1880, Starrett's commitment has earned them a reputation as one of the most trusted names in the industry.

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