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Document Title |
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7178252 |
Pipe fitting aligning device
A pipe fitting aligning device having at least one square block assembly slidably positioned on a reference tool. The square block assembly includes a slot with a vertical scale extending...
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6941667 |
Teaching sin and cosine instrument
A device that teaches the relationship between a right triangle, the length of its hypotenuse, the length of its two sides and the trigonometric functions. The device includes a horizontal and...
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6895675 |
Apparatus and methods for measuring the movement of a straightedge to draw lines or cut strips of a flat material
Novel measuring and cutting apparatus and methods are disclosed. In one embodiment, an apparatus includes a base member, an elongated member having an attachment end coupled to the base member and...
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6536125 |
Measuring and shifting square
A device for generating angles has a ruler-shaped basic rail having a first guide extending in a longitudinal direction of the basic rail. A stop rail is arranged in the first guide of the basic...
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5652506 |
Apparatus for measuring an a.c. current in a cable
An apparatus for measuring an a.c. current flowing in an electric cable comprises a pair of jaws for receiving the cable and which are movable towards one another to engage the opposite sides of...
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5205045 |
Household tile cutting gauge
A tile cutting gauge comprises mainly a semi-circular protractor and a guide rod pivotally fastened to the protractor. A length ruler is slidably mounted on the straight side of the protractor,...
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4712308 |
Measurement method and apparatus
Method and apparatus for interpolating elevation values and related locations from data provided on drawings by using an instrument with a supporting scale bar on which are mounted two slides that...
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4562649 |
Adjustable carpenter square
An adjustable carpenter square for use in determining the relative angles between two predetermined points defined by a pair of longitudinal extensions pivotally attached together at one end.
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4451993 |
Sliding rule and protractor
An extensible rule and protractor formed by an equally dimensioned pair of superposed strap members, having indicia thereon, secured together by a screw projecting through one member and sidably...
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4327500 |
Computational aid device for Ekelund ranging
A computational aid device for Ekelund range determinations comprising a e member adapted to be placed over a bearing/time plot and including two leg members to be aligned with intersecting bearing...
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4282655 |
Cardiac axis calculator
A device for determining the mean cardiac axis for aiding in the interpretation of an electrocardiograph includes a disc shaped member having a pair of radially extending arms pivotally attached to...
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4223445 |
Carpentry measuring tool
A carpentry measuring tool including two arms pivotally connected at adjoining ends thereof. The two arms are angularly adjustable with respect to one another, and are adapted for determining the...
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4133113 |
Proportioner device and method of use of same to shim motors
The invention comprises a linear proportioning device and method of using same to quickly and accurately calculate the shim thickness necessary to bring the shaft axis of a motor parallel to that...
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3766652 |
TRIGONOMETRIC AID
A nomographic device for determining the solution of problems involving the length of the sides and hypotenuse of right triangles and the size of angles between said sides and the hypotenuse,...
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3686765 |
CALCULATOR FOR DETERMINING REQUIRED EXTENSIBLE CRANE BOOM FOR USE ON A PARTICULAR JOB SITE
A calculator for determining the necessary extensible, mobile, crane boom required for use on a particular job site wherein a pair of cooperating slides are carried within an envelope having two...
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3574945 |
MEASURING INSTRUMENT
The invention comprises a measuring instrument including a graduated base blade, longitudinally slotted so that the lower end of a graduated, upright blade may be guidably, slidably connected to...
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3324559 |
Compound angle computer
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3238625 |
Angulator
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3181242 |
Straightedge attachment for tape measure
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3122314 |
Scale-type calculating device
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3104469 |
Analog computer
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3010210 |
Apparatus and method for studying earth profile by means of topographic maps
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2903919 |
Scribing guide device
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2845223 |
Boat calculator
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2822618 |
Pocket surveying device
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0989806 |
Title is not available
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