Peerless Model 455 Dwell Tach Primary Analyzer with 3 Instruction Manuals. A compression gage is also included (not tested nor is the analyzer). Booklet #1 has all the Peerless Models available. Piece of paper #2 has tachometer hook up for High energy Ignition Systems. The 3rd is more operations of the analyzer, 7 pages, printed in 1973.
