TABLE OF CONVERSION FACTORS. ─────────────────────────────────────────────────────────────── GEOMETRICAL EQUIVALENTS. ──────────────────────────┬──────────────────────────┬───────── SCALE C. │ SCALE D. │If C = 1, │ │ D = ──────────────────────────┼──────────────────────────┼───────── Diameter of circle │Circumference of circle │3·1416 „ „ │Side of inscribed square │0·707 „ „ │„ equal square │0·886 „ „ │„ „ equilateral │ │ triangle │1·346 Circum. of circle │„ inscribed square │0·225 „ „ │„ equal square │0·282 Side of square │Diagonal of square │1·414 Square inch │Circular inch │1·273 Area of circle │Area of inscribed square │0·636 ──────────────────────────┴──────────────────────────┴───────── MEASURES OF LENGTH. ──────────────────────────┬──────────────────────────┬───────── Inches │Millimetres │25·40 „ │Centimetres │2·54 8ths of an inch │Millimetres │3·175 16ths „ „ │„ │1·587 32nds „ „ │„ │0·794 64ths „ „ │„ │0·397 Feet │Metres │0·3048 Yards │„ │0·9144 Chains │„ │20·116 Miles │Kilometres │1·609 ──────────────────────────┴──────────────────────────┴───────── MEASURES OF AREA. ──────────────────────────┬──────────────────────────┬───────── Square inches │Square centimetres │6·46 Circular „ │„ „ │5·067 Square feet │„ metres │0·0929 „ yards │„ „ │0·836 „ miles │„ kilometres │2·59 „ „ │Hectares │259·00 Acres │„ │0·4046 ──────────────────────────┴──────────────────────────┴───────── MEASURES OF CAPACITY. ──────────────────────────┬──────────────────────────┬───────── Cubic inches │Cubic centimetres │16·38 „ „ │Imperial gallons │0·00360 „ „ │U.S. gallons │0·00432 „ „ │Litres │0·01638