American Grinding and Machine Company

Formulas
Weight of squares/rectangles = .284 x thickness x width x length

Weight of Circles = .892 x thickness x (dia/2)²

Weight of Rings = .223 x thickness x (OD² - ID²)

Diagonal of a Rectangle or Square = the square root of (w² + L²)

Conversion Factors
Length
1 m = 39.37 in = 3.28 ft = 100 cm
1 ft = 30.48 cm
1 in = 2.54 cm
1 mi = 5280 ft = 1.609 km
1A = .00000001 cm
1 micron = .0001 cm = .000001 m

Mass
1 slug = 14.59 kg = 32.2 lb (mass)
1 g = .001 kg = .0000685 slug

Time
1 year = 365 days = 31,600,000 sec
1 day = 24 hrs = 1,440 min = 86,400 sec

Area
1 cm² = 0.155 in²
1 m² = 10.76 ft²
1 in² = 6.452 cm²
1 ft² = 144 in² = .0929 m²

Volume
1 m³ = 1,000,000 cm³ = 1,000 liters = 35.3 ft³ = 61,000 in³
1 ft³ = .0283 m³ = 28.32 liters

Velocity
1 mi/hr = 1.47 ft/sec = 0.447 m/sec
1 m/sec = 100 cm/sec = 3.281 ft/sec
1 mi/min = 60 mi/hr = 88 ft/sec

Acceleration
1 m/sec² = 3.28 ft/sec² = 100 cm/sec²
1 ft/sec² = 0.3048 m/sec² = 30.48 cm/sec²

Force
1 N = 100,000 dyne = 0.2247 lb

Pressure
1 N/m² = 10 dyne/cm² = 0.000145 lb/in²

Energy and Power
1 J = 10,000,000 ergs = 0.239 cal = 0.738 ft lb
1 cal = 4.18 J
1 hp = 745 W = 550 ft lb/sec