Abstract: An object of the present invention is to provide a constitution of a chemical volatilization device having a chemical retainer which, in addition to having a chemical retaining function based on an arrangement of mesh-like chemical-retaining fibers and other chemical-retaining fibers, is also able to improve chemical volatilization effects, and is a chemical volatilization device for rotating a chemical retainer 1 made of fibers as a material with a rotary drive device, which is able to achieve the aforementioned object based on employing the chemical retainer 1, wherein, together with arranging mesh-like chemical-retaining fibers 2 arrayed regularly in two-dimensional directions on both the upper and lower sides of the chemical retainer 1, a plurality of supportive connecting chemical-retaining fibers 3 are arranged between the mesh-like chemical-retaining fibers 2 on the upper and lower sides formed in individual mesh units, which support and connect the chemical-retaining fibers 2 on both the upper and low

Abstract: A battery-actuated insecticide transpirator comprises: a radiation plate located in contact with an insecticide; and a heating element using a battery; wherein the surface of radiation plate is heated to a temperature of from 90.degree. to 130.degree. C. for transpirating the insecticide, and wherein the heating element consists of a battery connected to a positive temperature coefficient thermistor (an organic PTC) made from a mixture of thermoplastic polyolefin resin and carbon; and wherein the insecticide is a cyclopropane carboxylic ester pyrethroid having a vapor pressure of 1.0.times.10.sup.-4 mmHg or higher at 2.degree. C. A method for transpirating insecticide using the transpirator.

Abstract: A surface texture measuring instrument comprises an immovable casing located on an object, a movable pick-up for detecting a surface roughness of the object, and a driving unit in the casing for driving the pick-up. The pick-up comprises a skid having a curved surface for absorbing a waviness component of the surface of the object, and a stylus in the skid for detecting the surface roughness thereof. The stylus is slightly deviated from a center of the curved surface to give a more accurate measurement of the surface roughness.