The level of accuracy depends on the application. Generally Â±0.5 to 1C accuracy is sufficient in the food industry whereas the pharmaceutical industry may require Â±0.2 to 0.5C accuracy or better. It is important to note the scale used in comparisons though Â±0.2C accuracy is not the same as Â±0.2F accuracy.
All vehicles towing trailers must have chains on one drive axle. Trailers with brakes must have chains on at least one axle. Requirement 2 (R-2): Chains are required on all vehicles except four-wheel-drive vehicles under 6,500 pounds gross weight and equipped with snow tires on all four wheels. Chains for one set of drive wheels must be carried by four wheel-drive vehicles using snow tires. Requirement 3 (R-3): Chains are required on all vehicles without exception. R-1 and R-2 are the most common conditions.
Struts. Struts are made up of portions of the car's suspension system. They contain the spring seats, spring coils, strut bearings, shock absorbers and the steering knuckle.Struts are used on front-wheel drive vehicles.truts. Struts are made up of portions of the car's suspension system. They contain the spring seats, spring coils, strut bearings, shock absorbers and the steering knuckle. Struts are used on front-wheel drive vehicles.