Brace Top and Rim Studies - Old Adamas Brace Corrections Summary Sheet and Deflection Tolerances

This internal technical document dated 10/5/77 is an Ovation Adamas guitar quality control summary sheet detailing brace corrections performed on instruments from years 1969 through 1976. It includes deflection tolerance specifications as of 1/1/76, categorizing measurements for guitar types R/L, S, N, and K as acceptable or not acceptable. A supplementary page provides a color-coded rating system (green/blue/red) for good, marginal, and unacceptable deflection ranges across the same guitar categories.