slide rule
an instrument used for mathematical calculations two rulers connected by a sliding central cursor markings on the rulers for measuring and calculating a slide cursor with a small window and a pointer a slide tab or knob for adjusting the cursor a body composed of plastic or metal
slide rule which is an instrument used for mathematical calculations slide rule which has two rulers connected by a sliding central cursor slide rule which has markings on the rulers for measuring and calculating slide rule which is a slide cursor with a small window and a pointer slide rule which is a slide tab or knob for adjusting the cursor slide rule which is a body composed of plastic or metal