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Ounce-Force Inch [ozf·in]

Ounce-force inch (ozf·in) is a unit of torque or moment of force used primarily in industries and applications where very small rotational forces are measured. It represents the torque produced when a force of one ounce-force (ozf) is applied at a distance of one inch (in) from a pivot point. This unit is especially useful in precision engineering, small mechanical assemblies, and electronics, where fine control of torque is necessary.

For example, ounce-force inches are commonly used to specify the torque settings for small screws, delicate instruments, or miniature motors. Since it measures very small torques, ozf·in allows engineers and technicians to ensure components are neither over-tightened nor under-tightened, which could lead to damage or malfunction.

Although the newton-meter (N·m) is the SI unit of torque, and pound-force foot (lbf·ft) is more common in larger mechanical systems, ounce-force inch remains practical in applications requiring detailed precision in the imperial measurement system. To give perspective, 1 ozf·in is approximately 0.007062 N·m.

Ounce-Force Foot [ozf·ft]

Ounce-force foot (ozf·ft) is a unit of torque or moment of force used to measure rotational force in situations requiring finer precision than pound-force foot (lbf·ft) but larger than ounce-force inch (ozf·in). It represents the torque generated when a force of one ounce-force (ozf) is applied at a distance of one foot (ft) from a pivot point. This unit is particularly useful in mechanical engineering, instrumentation, and small-scale mechanical systems where moderate torques are involved.

Ounce-force foot is valuable for quantifying torque in applications such as small machinery, instrument calibration, or assembly of mechanical devices where precise control of rotational force is critical. It helps ensure components are tightened or adjusted correctly without causing damage or failure.

While the newton-meter (N·m) is the SI unit for torque and the pound-force foot (lbf·ft) is common for larger forces, the ounce-force foot unit fits niche applications that require intermediate torque measurements within the imperial system. For reference, 1 ozf·ft equals approximately 0.00885 newton-meters.