The following photographs will give you a perspective on the development of the Guarded-Hot-Plate apparatus at NIST.
|1. Final version of NIST guarded-hot-plate apparatus built in 1929 by Van Dusen.||2. Chock Siu (sitting), Frank Powell (1), and Tom Watson in Front of 1929 NIST guarded-hot-plate apparatus (1973)||3. Prototype Robinson Line-heat-source guarded-hot-plate apparatus (1978).|
|4. The circular "hot plate" being installed by Research Associate Dave Ober (1) and mechanical engineer Mahn HeeHahn||5. Technicians John McAuley (1) and Rick Petersen instrument the new 1000-mm guarded hot plate.||6. NIST one-meter line-heat-source guarded-hot-plate apparatus (198).|