File:Vintage Casio Model fx-7000G Scientific Calculator, LCD Dot Matrix Display, Made In Japan, World's First Graphing Calculator Available To The Public, Circa 1985 - 1988 (15810483905).jpg - Wikimedia Commons
Vector Dot Product Calculator
Aurora Dot Matrix Scientific Calculator - Black (Pack of 1), AX-595TV : Amazon.co.uk: Stationery & Office Supplies
1 Round MilDot Calculator – Probably the fastest and most reliable MilDot calculator ever made