SET TIME AFTER BURST, disc'C', AGAINST ARROW'T,' disc'B. SET CURSOR LINE TO METER READING, disc'A.TOTAL WATER ACTIVITY OF ORIGINAL UNDILUTED SAMPLE IN MICROCURIES/C. APPEARS UNDER CURSOR LINE, disc'C. Luton, England Please check my other auctions for more slide rules and related items. Thanks for looking and good luck! The item "Atomic Burst / Nuclear Blast Slide Rule AERE Water Contamination Calculator" is in sale since Wednesday, May 27, 2020. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "baja_ron" and is located in Sloughhouse, California. This item can be shipped to United States, all countries in Europe, Canada, Japan, Australia, China, South Korea, Indonesia, Taiwan, Thailand, Hong Kong, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Malaysia, Brazil, Chile, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Turks and caicos islands, Bangladesh, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guadeloupe, Jordan, Cambodia, Macao, Martinique, Nicaragua, Peru, Pakistan, Paraguay, Viet nam, Uruguay.