4 Fahrenheit = -15.555556 Celsius

Electric current

7 Biot

70 Ampere

Bi → A

Photography

56 Apostilb

17.82536 Candela per square meter

asb → cd/m²

Force

74 Gram Force

0.7256921 Newton

gf → N

Electric conductance

81 Microsiemens

81,000.00 Nanosiemens

μS → nS

Speed

65 Mach

80,261.94 Kilometer per Hour

M → km/h

Acceleration

88 Milligal

8.800e-4 Meter per Second Squared

mGal → m/s²