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| Number | Title | Issue Date |
| 7051450 | Portable coordinate measurement machine A portable coordinate measurement machine comprises an articulated arm having jointed arm segments. The arm includes joint assemblies which include at least two read heads in communication with a periodic pattern of a measurable characteristic, the pattern and read ... | 05/30/2006 |
| 6968627 | Slope determination system A hand-held system for determining the slope of an element having an irregular surface, such as a shingled roof, or along a surface that is partially obscured by adjacent elements. The system comprises an inclinometer having a double indicator to provide two simulta... | 11/29/2005 |
| 6957496 | Method for improving measurement accuracy of a portable coordinate measurement machine A method for improving the measurement accuracy of a portable coordinate measurement machine which comprises an articulated arm having jointed arm segments is presented. This method includes sensing deformation of a portion of the articulated arm when the arm is pla... | 10/25/2005 |
| 6568092 | Angle cosine indicator The invention relates to a targeting device comprising a casing which houses a wheel. The wheel is weighted and free to rotate relative to the casing. A mount on the casing mates with a receiving apparatus on the rifle, thereby securing the casing to the ... | 05/27/2003 |
| 5752320 | Borehole dip instrument A dip angle indicator for use in boreholes, and having, an elongated casing, having a diameter to fit down a desired borehole, a sensing chamber, located along the central axis of the casing and defining first and second ends, a linear variable displaceme... | 05/19/1998 |
| 5680707 | Ladder inclinometer A housing includes a pendulum having a window registerable with either of spaced apart indicia depending on what side of a ladder a housing is mounted to indicate the ladder is positioned at a safe angle against a vertical support. Wording on the pendulum... | 10/28/1997 |
| 5239761 | Multiple-purpose measuring instrument A measuring instrument includes a casing served as a rule, an angular level secured in a central portion of the casing having a rotational protractor rotatably mounted in the level for measuring any angles, a horizontal gauge provided in a right side port... | 08/31/1993 |
| 4995169 | Device for indicating angular position Device for indicating the angular position between a first part and a part which is rotatable relative to the first part. Each of these parts exhibits a grating (15, 16) consisting of a pattern which, in each grating, comprises opaque lines separated by i... | 02/26/1991 |
| 4726009 | Leveling device and method for record playing turntables A leveling device and a method of use for record playing turntables to insure that the turntable is completely level around the entire periphery thereof. The leveling device comprises an outer housing having a peripheral section and with an opening in the... | 02/16/1988 |
| 4656752 | Precise-reading angular level A precise-reading angular level includes a casing, a rotational protractor rotatably mounted in the casing, a plumbing swing wheel pivotedly mounted in the protractor, and a vernier formed on the central top position of the casing above the protractor, wh... | 04/14/1987 |
| 4426788 | Inclinometers An inclinometer of the type wherein a weight rotatable in accordance with the inclination of a vehicle is provided for a drive unit, and a torque of the drive unit is transmitted to a driven unit so as to display the inclination angle of the vehicle with ... | 01/24/1984 |
| 4364175 | Grade Liner A grade liner which is used in cooperation with grade stakes to determine the grade within a ditch. Means are provided for establishing a horizontal line of sight a selected rise distance "A" above a grade stake. Plumb means are provided which intersect t... | 12/21/1982 |
| 4361961 | Device for measuring the angular orientation of horizontal bores Two tubular elements are connected by a ball-and-socket joint and arrangements are provided for measuring angular displacement which occurs between the longitudinal center axes of the two elements.... | 12/07/1982 |
| 4003134 | Automatic lighted level and angle finder An automatic lighted level and a angle finder has a frame provided with a planar surface arranged for abutting against an object the orientation of which is to be determined or adjusted. An electrically energized visual indicator is mounted in the frame o... | 01/18/1977 |
| 3945129 | Instrument for the indication or checking of the angular position of an object An instrument for indicating or checking the angular position of an object. A movable part is mounted on a stationary part; said parts have a pattern of equally wide parallel lines separated by interspaces. When the parts overlap in use of the instrument ... | 03/23/1976 |
