Plotting Sheet Covering 3 Degrees of Latitude

This is a new style of plotting sheet for a standard letter sized sheet of paper (one nautical mile per millimeter).. The coverage is 3 degrees of latitude and 4 degrees of longitude. To scale a degree of longitude use the scale at the left margin that has the number of latitude minutes for one degree of longitude going from 0 to 60 degrees of latitude. The example shows scale for 35 degrees of latitude.

Compact Wallet Sight Reduction

It is possible to go very small with celestial sight reduction yet still achieve 1' precision. Kit includes: a credit card calculator, 10' sin cos tables (1 page), Wescott protractor, and mini Pilot pencil 0.5mm. The table can be printed from the online PDF of Schaum's Outlines Mathematical Handbook of Formulas and Tables pages 247 and 248. https://www.academia.edu/41808762/Mathematical_Handbook_of_Formulas_and_Tables_SCHAUMS_outlines

Magnification Visor

This magnification visor provides both hands free for chart work, mechanical watch repair, and slide rule calculations. Link: https://www.ebay.com/itm/334368400401?hash=item4dd9e8e411:g:B~oAAOSwsNhfB2jg&amdata=enc%3AAQAIAAAA8A6Do5M29frhrStCgEJ3vDZ7CIdB2B1M8YD4yBIjJqmGZPPmf6A7hlWW%2BWinwr6YrovgHyfyPRW7ilBJKDhfAYvfNiaSo27wQs7OQwHrCHiEkDsWgJcYy7ZPAHjrR4b1XKhB1AdsSRCbwDX0iAmzPgOMOKeXORgxFnRBaGqRxIhUKiYHSWQg594A8LS2U49ao9rePCA66oK85GEjkAjaEH8XUJYLlX7Mm0CymzHTRnuou0OfB9fMJCRqUrdnmEA6%2F64Nmux%2BsZQVp14puXuCyxr3SsSj6isT7VsUnzOKji7rJ5t9rY%2BUAkiJa%2Be%2Bg0ZoEQ%3D%3D%7Ctkp%3ABFBMwNmutqtj