Hi, everyone! What size (either inches or metric) is that little E-clip which secures the tip of the Heathkit UniProbe? 73, Sandy AC1Y Alexander N. Gerli, Sr. 548 Allred Mill Road Mount Airy, NC 27030-2202 Scotsmen walk about 900 miles each year. A Scotsman drinks around 45 gallons of Whisky a year. Scotsmen get about 20 Miles Per Gallon.