This document contains the text of three days of hearings before the United States House of Representatives Subcommittee on Science, Research, and Technology. The hearings were held to consider the role of science and engineering in world competitiveness, particularly with regard to the United States' nonmetric posture in a metric world. Testimony is included from: (1) The Honorable Don Ritter (U.S. Representative from Pennsylvania); (2) Dr. Lewis Branscomb (Harvard University); (3) Dr. Gordon Millar (National Academy of Science); (4) Helen Davis (American Society of Testing and Materials); (5) Daniel DeSimone (American Association of Engineering Societies); (6) Kenyon Taylor (North American Tool Company); (7) Frank Feigin (Digital Equipment Corporation); (8) Douglas Riggs (Department of Commerce); (9) Dr. Allen B. Rosenstein (University of California at Los Angeles); (10) Stanley Winkleman (Stanley Winkleman Associates); (11) Dr. Russell Drew (Institute of Electrical and Electronic Engineers); (12) Dr. Ronald L. Kerber (Department of Defense); (13) Larry Sumney (Semiconductor Research Corporation); (14) Charles E. Sporck (National Semiconductor Corporation); (15) Charles H. Ferguson (Massachusetts Institute of Technology); (16) Dr. William R. Graham (Science Adviser to the President); (17) J. Michael Farrell (Department of Energy); (18) Richard B. Geltman (National Governors' Association); (19) Frank H. T. Rhodes (Cornell University); (20) George H. Dummer (Massachusetts Institute of Technology); and (21) William Carpenter (Martin Marietta Energy System, Inc.). (TW)