A large number of perforated plate parts are often produced and used in industrial production, and the mutual position of the holes on them often has certain precision requirements, especially when such parts are used as templates for injection molding, stamping templates, etc. Mutual coordinate positions have higher accuracy requirements. To measure the mutual position of these numerous (and sometimes hundreds) of holes, coordinate measurements are often used. On the most coordinate measuring instrument, optical microscope, contact measuring head, etc. are used to measure the aiming. Due to the working characteristics of the point measuring method, the measuring efficiency is low and the labor intensity is large. This paper introduces an optoelectronic non-contact measuring head for the measurement of the perforation of the perforated plate. Use this probe to measure the center of the hole to be measured, and use the scanning measurement method in the coordinate measuring machine or digital computerized work.
Compared with single-channel pipettes, multi-channel pipettes simplify all the tasks associated with microtiter plates that often occur in immunology, biochemistry, clinical diagnosis and food analysis. Multi-channel pipettes generally have 8 and 12 heads. The gun body can be rotated at 360°C, and each part can be disassembled and repaired separately. The lower half can be sterilized at 121°C. The dimpled housing ensures a firmer grip for the operator. Can be quickly calibrated.
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