Palmer all pro's deliver legibility, economy, and performance to any application: hvac, pipe/valve/fitting, or industrial process. All pro thermometers are an economical alternative to our all star line. All pro's feature all welded 304ss construction provides the resistance needed in corrosive working environments, vibration, and other rugged conditions. The instrument has been designed to handle accurate temperature measurement for most industrial and laboratory applications, giving these thermometers a long service life. Dials are specially fabricated of low-glare finished metal using a deep draw design for antiparallax alignment of pointer to graduation marks. High-visibility numerals and graduations also help minimize reading errors. A hex nut located on the back of the case allows for recalibration. The low cost and high quality makes the all pro a popular instrument for many applications. Form: 3" dials available in all angle adjustable. Case: polished-type 304 stainless steel case and bezel in 3" size. Cases are hermetically sealed. Stem: polished-type 304 stainless steel. Dial face: black graduations and numerals on white background. Anti-parallax dial design with linear scale. High-visibility tapered- tip black pointer.