A Measuring device (1) comprising:
- a. a Frame (10) having a Frame first end (12), a Frame second end (14) and a Frame bottom (16);
- a Frame axis (100) centrally positioned from the Frame first end (12) to the Frame second end (14);
- b. an Extender component (20) has an Extender frame (30) having an Extender first end (35), an Extender second end (36), an extender first side (37) and an extender second side (38);
- the Extender frame (30), proximal the Extender second end (36), is pivotally interconnected by extender pivot (34) means with an Extender pivot and attachment plate (28);
- the extender component (20) is parallel with the frame bottom (16) when the extender component (20) is recessed;
- the extender component (20) pivotally extends upwardly from the frame bottom (16) when raised;
- c. the Extender pivot and attachment plate (28) having guide means which receives an Extender guide rod (22), the Extender guide rod (22) is immovably fixed by guide rod immovable affixing means, proximal the Frame second end (14), at an Extender guide rod first locator (24);
- the Extender guide rod (22) is immovably fixed by guide rod immovable affixing means, distal the Frame second end (14), at an Extender guide rod second locator (26);
- the Extender pivot and attachment plate (28) is intermediate the Extender guide rod first locator (24) and the Extender guide rod second locator (26);
- d. an Extender contact (32) proximal the Extender first end (35);
- e. an at least one stabilizer (40) having an at least one stabilizer frame (42);
- the at least one stabilizer frame (42) having a stabilizer frame first end (43) and a stabilizer frame second end (44);
- stabilizer pivot means (48) rotatably interconnecting the stabilizer frame first end (43) with a stabilizer pivot plate (46);
- the stabilizer pivot plate (46) upstanding and rigidly affixed by plate affixing means to the frame bottom (16);
- stabilizer pivot means (48) rotatably interconnecting the stabilizer frame second end (44) with the extender frame (30) at the extender first side (37) or the extender second side (38);
- f. spring affixing means formed by a Spring holder (50);
- the spring holder comprised of a cylinder fixedly receiving the stabilizer spring (52) or other mechanical interconnections including clip, bracket and other spring attaching means rigidly affixed to the at least one stabilizer (40) intermediate the stabilizer frame first end (43) and the stabilizer frame second end (44);
- the spring holder (50) extending from the at least one stabilizer (40) orthogonal to the frame axis (100);
- stabilizer spring (52) received by spring affixing means at the spring holder (50) and extending downwardly toward the frame bottom (16) when the extender component (20) is recessed;
- the stabilizer spring (52) is compressed when the extender component (20) is recessed and urges the extender component (20) upwardly from the frame bottom (16);
- retraction means (70), having retraction means first end (72) and retraction means second end (74);
- the retraction means (70) affixed by retraction affixing means at the retraction means first end (72) to the extender pivot and attachment plate (28) and affixed by retraction affixing means at the retraction means second end (74) to a stabilizer pivot (46);
- the retraction means (70) urging by a spring function the extender component (20) upwardly and away from the frame bottom (16);
- g. a variable resistance means (60) affixed by variable resistor affixing means at or within the frame or proximal the frame bottom (16);
- the variable resistance means (60) interconnected by potentiometer movement interconnection means (64) with the extender pivot and attachment plate (28);
- the potentiometer movement interconnection means (64) is movably interconnected with the variable resistance means (60);
- electrical communication power means (80) to apply voltage across the variable resistance means (60);
- electrical measurement means (82) to provide a measurement means to measure change in voltage output from the variable resistance means (60) with movement of the potentiometer movement interconnection means (64);
- h. a frame cover (90) generally parallel with the frame bottom (16);
- an aperture in the frame cover (90) permitting passage of the extension component (20) for the extension and recession of the extension component (20);
- a retainer (92) movably interconnected with the frame cover (90);
- the retainer (92) extendable to prevent extension of the extension component (20) and retractable to allow extension of the extension component (20);
- the retainer (92) slidably received by a bracket or slot means (94) proximal the frame first end (12), frame second end (14), frame first side (17) or frame second side (18).