There are few things you need to consider before buying a Crane Scale. The crane scales listed below are manufactured by reputable companies and are supplied with documents guaranteeing their quality. A Crane Scale is not like any other scale, it is a part of a lifting mechanism that needs to be tested like any other lifting gear such as shackles, slings and hooks. Think of a scenario where and industrial accident happens and a lifting mechanism fails and injures an employee, you have all of the paperwork for the lifting gear apart from the cheap crane scale you bought. What happens next is anyone guess, but i'm sure the HSE would be very interested and so would an your liability insurer.
When buying a Crane Scale its a good idea to know what you are buying and what documentation you are supplied with. The difference bewteen a cheap crane scale and the ones supplied below are not big enough to take the risk. The crane scales below are certified and traceable.