Abstract: An end cap feature for a level includes a frame having a gauging surface and a web which extends at an angle relative to the gauging surface. The web includes a recess adjacent to an end of the frame. The web recess opens onto the end of the web and extends inwardly therefrom. An end member includes a web-receiving such as a slot defined between a pair of side members, each of which is formed with an opening. The web recess and the end member openings are in alignment with each other when the end of the web is received within the web-receiving structure. A retainer member is positioned within the web recess when engaged within the opening of the end member, and the retainer member and web recess are configured such that engagement of the retainer member within the web recess maintains the end member in engagement with the web. Engagement of the retainer member within the opening of the end member prevents movement of the end member relative to the web.

Abstract: A device for detecting a profile depth and/or a profile type of a vehicle tire has a profile-measuring device, a camera system for detecting the vehicle, an evaluating unit, which couples the profile-measuring device and the camera system to one another; and further having at least one of the components: a speed-measuring device for detecting the vehicle speed; a direction of travel-measuring device for detecting the steering situation or movement direction of the vehicle, wherein the evaluating unit is designed to produce a measuring signal for the current acceleration of the vehicle and the control is designed to permit an evaluation only when the vehicle is situated in a preset frame at a relatively uniform speed; and wherein a measuring signal for the movement direction of the vehicle can be produced by the evaluating unit and the measuring signal is provided for control of the evaluation of the profile measurement and the control is designed to permit an evaluation only when the vehicle is situated in a

Abstract: An engineering drawing copier includes a device for measuring and recording cumulative movement of the copier's paper feed belt only when paper is present at the exposing lamp. A correct cumulative paper length is generated, notwithstanding variations in the size and shape of the sheets which have been copied.

Abstract: A method and apparatus for detecting magnetic marks on a wireline logging cable and for more accurately making depth measurements during logging is described. The method uses depth-based, rather than time-based, samples and calculations. A Hall Effect sensor samples the cable at regular depth intervals approximated by an encoder mechanism. The signal values from the Hall Effect sensor are signal processed to better discriminate the precise location of the magnetic marks on the cable. The location of the magnetic marks is used to refine the depth measurements from the encoder mechanism. Depth-based sampling eliminates detection dependence on cable speed, enhances detection ability, reduces computational load, and leads to more accurate determination of the location of magnetic marks.

Abstract: A mobile sewer cleaning machine comprises an elongated sewer cleaning tool wound upon a reel mounted in a reel compartment of the machine. A reel control motor is coupled to the reel to rotate the reel in one direction to play out the tool into a sewer by unwinding it, and in the opposite direction to retract the tool from the sewer by rewinding it. A rotatably mounted tool sensing drum is frictionally engaged with and rotated by the tool and includes a position indicator adjustably mounted to its side. Two proximity sensors are positioned to sense the position indicator as the drum is rotated by extension or retraction of the tool. To provide improved accuracy and ease of operation, the two proximity sensors are mounted opposite to one another across a diameter of the tool sensing drum.