Vintage Cardboard Ruler

vintage cardboard ruler old antique retro inch inches cm cms centimeter centimeters centimetre centimetres mm mms millimeter millimeters millimetre millimetres metric system measurement measuring unit units point points width height dimension dimensions scale scaling tool visual aid math mathematics number numbers numeric digit digits letter letters type paper page sheet stationery stationary texture textured background backdrop border borders frame frames card-board line lines linear straight brown maroon sepia beige black stock resource free image picture scan scanned flat surface graphic scrapbook scrapbooking