[X-TECH MAN]

FYI.......When I worked for IHRA I was employed by the Dept. of the Navy (yeah....a Govt. job for 18 years) in a calibration lab. We have to be certified each year by a higher lab with the Navy. Some equipment we were allowed to certify ourselves. Other things we had to send to Norfolk Navy base or up to the D.C. Navy yard to be certified. Our lab its self had to be certified to be at 40-42% humidity and 68 to 70 degrees. Different labs have similar ratings but some are different by a few % and degrees. I checked ALL of my tools I used before each race. The tools themselves used in teardowns have a tolerance figure of their own such as a dial indicator has + -- .001. It was NOT required to check our tools at that time but I did it just to be sure. Its still up to the racer to be sure of what he has. The electronic calipers used mostly today and back in the 1980's and 1990's I found to be mostly JUNK. Use a DIAL CALIPER. A lot of the elec. tools are crap. Check it with a gauge block or standard. The rule of thumb is to be at or under the spec. in most cases. Cylinder combustion chambers of course have to be over the spec. I always gave the racer time to cool cylinder heads. Besides who wants to handle HOT engine parts. Use a "CERTIFIED" Burette to check C.C's and not these cheap crappy ones that are sold by some mail order places. Fisher Scientific is a good brand but cost a little more.