Shop › 1/2" NPT x 1/2" copper fitting - Thermometer adapter Image 1 of 1 1/2" NPT x 1/2" copper fitting - Thermometer adapter $5.99 Solder this part to your still to use a 1/2" NPT thermometer.Installs with a 5/8" drill bit. Get notified by email when this product is in stock. Add To Cart Added! Solder this part to your still to use a 1/2" NPT thermometer.Installs with a 5/8" drill bit. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Copper Ferrules - Tri Clamp from $21.99 Screened Tri clamp Gaskets - 100% Silicone #10 Stainless Steel Mesh from $17.99 1.5 inch x 0.5 inch Tri Clamp to FPT - Stainless Steel $13.99 Boiler Drain Gasket $1.99 Digital Thermometer with Lead Free Thermoport and Gasket 1/2 NPT $21.99