Badge Credit Card Sized Grade Rod Reading

Guide to Reading Decimal Feet (Grade Stakes & Layout) Grades and elevations are given in decimal feet, which can be hard to visualize in inches. A fast way to read them is to think of a clock face: 1.00 ft = 12 inches The clock has 12 “hours” Each hour ≈ 1 inch ≈ 0.083 ft So every “hand” on the clock equals about 0.08 ft. Break the foot into easy landmarks: 3 hands = 0.25 ft (3") 6 hands = 0.50 ft (6") 9 hands = 0.75 ft (9") 4 hands = 0.33 ft (4") 8 hands = 0.67 ft (8") Then fill in around the middle: 5 hands = 0.42 ft (5") 7 hands = 0.58 ft (7") Key ones to memorize: 10 hands = 0.83 ft (10") 11 hands = 0.92 ft (11") 2 hands = 0.17 ft (2") If you can picture the clock, you can instantly convert decimal feet to inches without doing math. Once the inches have been memorized to the decimal feet, use the conversion chart above to adjust. Example: Stake reads 0.60. Nearest value is 0.58 which is 7 inches, or 0.58. To reach 0.60 add 0.02, or 2/8" or 1/4". In summary 7-1/4" is close to 0.60 decimal feet