I was lucky to win my second A-maze-n Products giveaway contest from their newsletter! Thanks Todd! This instant read therm was calibrated and signed off in handwriting by a Maverick tech., giving the parameters. It's about a five second read from ice water to boiling and faster with temps in between. It reads within one degree of my Thermowand (now Javelin) from Lavatools The Thermowand is always faster but lacks the backlit display of the Maverick for night viewing and deep readings for roasts. This Maverick is the PT-100 and maybe the official therm of Texas because it's huge, 7.5" long closed with a 4.5" probe. You won't lose it or need glasses to read the display even if your standing on the surface of the Sun (because it's a reverse LCD display showing white numbers on a black background.) Here are a couple pics:
Boiling water was just as accurate at my elevation. The thermowand/Javelin for a 3-4 second reading @ $24.99 including shipping, with a magnetic back, with a 4.5 star out of 5 with 5,000+ reviews since it's been around for two years, with a lifetime warranty can't be beat. If the Thermapen had a warranty longer than 2 years (that would justify the price), I would purchased it. Especially the MK4 with the self righting screen for an upright reading at any position you hold the therm.