Print, Photographic
Black and white photographic print depicting part of the turbine bucket set-up in the Department #35 Process Laboratory at the Champion Spark Plug Co.
Caption on verso reads, "In the foreground is shown one of the gages used in checking the concentricity of turbine buckets. To the right of this gage is shown a sine block and height gage with a special dial indicator used to check the ground angle of a turbine bucket. Johansson Gage Blocks, as shown in the background, are used for setting up both the sine block and height gage when taking measurements. To insure extreme accuracy, all measurements are taken from the base of a surface plate. The turbine buckets and inspection equipment shown are assembled on the surface plate."
Dated 2-10-1947
