Features of Hand Tools ? A Review

People spend most of their time in using hand tools. Hand tools aid to perform any job safely, efficiently and comfortably even in adverse working conditions reinforcing strength and effectiveness of hands. If the hand tools are not well designed people may face drudgery. Although in recent years the use of modern gadgets and appliances have apparently simplified the methods of performing many activities but on the other hand it has brought in several ergonomic issues towards health and safe working performance of the user. While doing any work, different undesirable and un-ergonomic tools to which people become adaptable that effect user health and psychology. To avoid such hazards features of hand tools is necessary to be considered. The review was collected accordingly and the designed tools which consider features of hand tools in the aspect of ergonomics - should be of good quality, lightweight and the heavy weight tools should be suspended or counterbalanced. Tools with straight handles are for tasks where the force is exerted perpendicular to the straightened forearm and wrist, for instance, when the force must be applied vertically. Larger handles allow fingers to wrap comfortably around the tool in a power grip, which prevents slippage and reduces stress and impact on hands, fingers and wrists. The thicker the handle the lesser is the load on the hand muscles can also be noted.