Revisiting the Clear Sky Calculator
I usually spend every other Saturday in my hometown, working as a butcher in my Dad and Uncle’s grocery store. Last time I was there, during an afternoon lull, I noticed a calibration verification sticker on the scale used to weigh meat (not un…
Long-term drift: When is recalibration warranted?
I went to my dentist yesterday morning for a 6-month cleaning and check-up. Since I have had no special dental problems for several years, I quizzed him about the need for inspections every 180 days. He replied with an eloquent summary of the mic…