Stock photography, photos: Depth guage in Roman numerals Stock photos of A ships depth guage in Roman numerals. Seven, eight, nine. Photograph: © David Robertson Click for a larger image and more information Keywords associated with this stock photo: 7, 8, 9, abstract , Alba, boat, bow, colour, color, scenery, scenic, Scotland, Britain, British Isles, close up, Corpach, count, counted, counting, depth, detail, digit, EEC, eight, environment, EU, Europe, European Union, float, floating, Fort William, gauge, GB, Great Britain, guaged, Highland, hull, IX, Lochaber, math, mathematics, measure, measured, measuring, nine, number, numeral, numerecy, numerical, order, roman, roman numeral, rule, ruled, ruler, sciences, seven, ships, transportation, U K, UK, United Kingdom, british, scottish, Vertical, water, waterline, XII, XIII