A.C.-D.C: Carries conveniently, the aluminum column has scale division, the survey is accurate.
Photoelectric timer: The interior is loaded with 4 dry cell batteries, the base has magnetism, survey scope 0ms~9999ms, precision 1ms.
Two of electric eye: It has the scale division target, may walk upstream the aluminum column.
Electro-magnet and place: It is loaded with the lead plumb bob which can be revolved.
Aluminum column: 120cm high, is printed with the scale division.
Foundation: Cast iron baking varnish three prismoids, three adjusting screw.
One of Crown adsorption plate, five of steel ball.