2 results about "Measuring ruler" patented technology

The invention relates to a calibration device and a positioning method for a regular geometry, and relates to the field of building construction. The calibration device comprises a flexible cover body, a flexible measuring ruler, a connecting mechanism and two calibration mechanisms, and the measuring ruler is arranged on the cover body in the length direction of the cover body; the connecting mechanism is arranged on the cover body and is used for fixing the cover body on a to-be-measured geometry; the calibration mechanism is clamped on the measuring ruler and can move along the length direction of the measuring ruler; in a using state, the cover body is attached to the outer surface of the to-be-measured geometry in the circumferential direction of the to-be-measured geometry, and the connecting mechanism is fixed to the to-be-measured geometry; and a difference value of the scale values of the two calibration mechanisms on the measuring ruler is equal to half of a perimeter of a cross section of the to-be-measured geometry. The calibration device can be fixed to the to-be-measured geometry in an attached mode, the center of the cross section of the to-be-measured geometry can be calibrated through the scale values of the two calibration mechanisms, the structure is simple, operation is convenient, and supports do not need to be erected.

The invention provides a tree small particle size fruit/seed particle size measuring device, and belongs to the technical field of particle size measurement. The tree small particle size fruit/seed particle size measuring device comprises a box body, a baffle and a measuring ruler; a rectangular or square groove is formed in the box body; four angles of the groove are right angle baffle blocks protruding inward; the side length of the right angle baffle blocks is 5 mm; the baffle is provided with a transverse through hole, and both ends of the baffle are slidably connected with the transverseside wall of the groove; the position of the transverse through hole corresponds to the longitudinal side wall of the groove; the measuring ruler penetrates through the transverse through hole, the two ends of the measuring ruler are slidably connected with the longitudinal side wall of the groove, a scale value is arranged on the upper surface of the measuring ruler, and the initial scale value is 0 and is aligned with the edges of the right angle baffle blocks; and a scale value is arranged on the longitudinal side wall of the groove, an initial scale value is 5mm, a tail end scale value is20mm, and the distance between the tail end scale value and the right angle baffle blocks is a width value of the measuring ruler. The tree small size particle fruit/seed particle size measuring device avoids errors caused by fixing a fruit to be measured by a hand, the measurement accuracy is improved, the operation flow is simplified, and the measurement efficiency is improved.