Abstract: A slip-proof cover for a vehicle tire for use in adverse weather conditions, including snow or ice, with a configuration that allows a simple mounting. The cover is highly reliable and positionally stable, and has a good mechanical performance with respect to abrasion. The cover includes a band made of textile fabric including cords made of strands that may be of varying thicknesses and the textile ligament may be taffeta.

Abstract: Equipment for capturing the contour, markings, bores, millings and etchings of an ophthalmic lens or a template lens for glasses. Equipment for capturing the contour, markings, bores, millings and etchings of an ophthalmic lens or a template lens for glasses comprising lighting means (11) that produce a beam of parallel rays of light that can produce a projection, image capturing linear means (15), a translucent support (3) arranged between lighting means (11) and capturing means (15), and control means that digitalize and process the projection obtaining a flat representation of the contour, markings, bores, millings and etchings. The lens or template lens are placed on translucent support (3) and a high quality projection of the lens or template lens is formed on support (3) without having to prepare the lens or template lens beforehand by painting it or the like.

Abstract: Equipment for capturing the contour, markings, bores, millings and etchings of an ophthalmic lens or a template lens for glasses. Equipment for capturing the contour, markings, bores, millings and etchings of an ophthalmic lens or a template lens for glasses comprising lighting means (11) that produce a beam of parallel rays of light that can produce a projection, image capturing linear means (15), a translucent support (3) arranged between lighting means (11) and capturing means (15), and control means that digitalize and process the projection obtaining a flat representation of the contour, markings, bores, millings and etchings. The lens or template lens are placed on translucent support (3) and a high quality projection of the lens or template lens is formed on support (3) without having to prepare the lens or template lens beforehand by painting it or the like.

Abstract: A portable monitoring system for detecting a radiated electrostatic field and producing an audible warning when the detected field exceeds a selected value is characterized by a switching device which can be used to reset the threshold warning level and which is not affected by the hand proximity effect. An alarm is sounded when a signal corresponding to the detected field exceeds a value which is stored. The stored value can be reset by a manually operated switching circuit including a delay device operable to delay the storage of a reference level corresponding to the intensity of the field currently detected.

Abstract: An electric field strength indicator for use with high voltage conductors comprises a capacitive probe mounted within a tubular shield having an insulating spacer at one end for locating the unit with respect to a conductor under test. The probe is electrically coupled to a signalling circuit and is movable axially within the shield to a position at which a threshold response is obtained. Such position, which denotes the conductor voltage, is read on a scale provided. Because of the shield the device is directional, the probe being shielded from neighboring conductors.