Abstract: At present due to the inclinometer for measuring inner horizontal displacement, neglected the influence of the tip output parameter temperature coefficient, hence it brought more system error for measuring result. So it can’t used for measuring the small displacement elasticity deformation of concrete and foundation. This paper introduced a new inclinometer tacked key projects in the "Seventh-five year plan". This equipment has accounted the influence of temperature coefficient of the tip output parameter. And large minimized the system error for measuring. Thus it is possible to raise a values grade of the measure precision.?