4 Inches
IDEAL Electrical 61-796 Earth Ground Resistance Tester, 3-Pole, Carrying Case In
You will find that BHC Parts makes maintenance easier with their ready-to-install kits.
2225-20 Stainless Steel Bi-Metals Industrial Flange Mount Thermometer, 200 to 10
A nice touch is the silver base that prevents scratches on your countertop.