Officer's ruler - a special tool for the officer is a transparent plastic rectangle with slots (stencils, templates, transports you applied divisions for measuring angles, distances, drawing symbols on the maps). ____________ ru.wikipedia.org/wiki/Офицерская_линейка (rus)
地圖標記模板
Army、Icon Infographic、map、ruler、Russian、stencil
軍隊、圖標信息圖表、地圖、統治者、俄語、模版
資料來源：openclipart ( https://openclipart.org/ )