Heco Centering Scope For Watchmaker Jewelry Machinist Lathe Mill. The Heco Centering Scope is very similar to the Skoal Emco scopes but made in California. Feel free to message me with any questions, thanks! The item “Heco Centering Scope For Watchmaker Jewelry Machinist Lathe Mill” is in sale since Wednesday, May 22, 2019. This item […]