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 Dial Thermometer - Bottom Entry $39.99 Tri Clamp Gaskets - 100% Silicone from $1.69 Bubble Plate Gaskets from $2.99 Digital Thermometer Gasket $2.49 2 inch x 0.5 inch Tri Clamp to FPT - Stainless Steel $14.99