The invention is related to gages to measure incline angles of moving and immobile objects and can be used in incline angle gages in such transportation vehicles as airplanes and ships (if a phosphorus scale can be applied to a closed loop clear tube) as a standby device to display pitch and roll angles (FIG. 5, FIG. 6, FIG. 7, FIG. 8). The purpose of this invention is an effective measurement of incline angles in stationary and dynamic objects in a wide range (0-180, 0-360). Faster measurement is required to improve stated parameters of the general purpose liquid angle indicator. It is achieved because liquid, an air bubble or indicating ball within the semicircular and round clear tube, subjected to gravitational forces, can display measured angles relative to the scale on the graduated clear tube without being in a horizontal position.

The invention is related to gages to measure incline angles of moving and immobile objects and can be used in incline angle gages in such transportation vehicles as airplanes and ships (if a phosphorus scale can be applied to a closed loop clear tube) as a standby device to display pitch and roll angles (FIG. 5, FIG. 6, FIG. 7, FIG. 8). The purpose of this invention is an effective measurement of incline angles in stationary and dynamic objects in a wide range (0-180, 0-360). Faster measurement is required to improve stated parameters of the general purpose liquid angle indicator. It is achieved because liquid, an air bubble or indicating ball within the semicircular and round clear tube, subjected to gravitational forces, can display measured angles relative to the scale on the graduated clear tube without being in a horizontal position.

A level includes a frame having a top planar surface, a bottom planar surface, and a web coupling the top planar surface to the bottom planar surface. The top planar surface and the bottom planar surface are parallel. The level further includes a vial supported by the frame. The vial has a longitudinal axis passing through a center of the vial and a body defining an interior containing a liquid and an indicator bubble. The level further includes a plurality of LEDs. Each of the LEDs has a light emitting point, and each of the plurality of LEDs is positioned adjacent an end of the vial and is oriented such that the light emitting point is positioned within the interior of the body of the vial.

A level includes a frame having a top planar surface, a bottom planar surface, and a web coupling the top planar surface to the bottom planar surface. The top planar surface and the bottom planar surface are parallel. The level further includes a vial supported by the frame. The vial has a longitudinal axis passing through a center of the vial and a body defining an interior containing a liquid and an indicator bubble. The level further includes a plurality of LEDs. Each of the LEDs has a light emitting point, and each of the plurality of LEDs is positioned adjacent an end of the vial and is oriented such that the light emitting point is positioned within the interior of the body of the vial.

An extendable level includes a base frame having an internal passage, an extension member positioned within the internal passage and movable between an extended position and a retracted position relative to the frame, and a retainer mechanism for securing the extension member in position relative to the frame. The retainer mechanism is in the form of a modular retainer assembly that can be assembled as a unit to the base frame. The retainer mechanism includes a positioning arrangement that is configured to prevent movement of the extension member relative to the frame at predetermined positions of the extension member relative to the frame via a first engagement arrangement, and is further configured to resist movement of the extension member relative to the base frame at locations between the predetermined positions via a second engagement arrangement.

An extendable level includes a base frame having an internal passage, an extension member positioned within the internal passage and movable between an extended position and a retracted position relative to the frame, and a retainer mechanism for securing the extension member in position relative to the frame. The retainer mechanism is in the form of a modular retainer assembly that can be assembled as a unit to the base frame. The retainer mechanism includes a positioning arrangement that is configured to prevent movement of the extension member relative to the frame at predetermined positions of the extension member relative to the frame via a first engagement arrangement, and is further configured to resist movement of the extension member relative to the base frame at locations between the predetermined positions via a second engagement arrangement.

A level includes a frame having a top planar surface, a bottom planar surface, and a web coupling the top planar surface to the bottom planar surface. The top planar surface and the bottom planar surface are parallel. The level further includes a vial supported by the frame. The vial has a longitudinal axis passing through a center of the vial and a body defining an interior containing a liquid and an indicator bubble. The level further includes a plurality of LEDs. Each of the LEDs has a light emitting point, and each of the plurality of LEDs is positioned adjacent an end of the vial and is oriented such that the light emitting point is positioned within the interior of the body of the vial.

A level includes a frame having a top planar surface, a bottom planar surface, and a web coupling the top planar surface to the bottom planar surface. The top planar surface and the bottom planar surface are parallel. The level further includes a vial supported by the frame. The vial has a longitudinal axis passing through a center of the vial and a body defining an interior containing a liquid and an indicator bubble. The level further includes a plurality of LEDs. Each of the LEDs has a light emitting point, and each of the plurality of LEDs is positioned adjacent an end of the vial and is oriented such that the light emitting point is positioned within the interior of the body of the vial.

A level includes a frame having a top planar surface, a bottom planar surface, and a web coupling the top planar surface to the bottom planar surface. The top planar surface and the bottom planar surface are parallel. The level further includes a vial supported by the frame. The vial has a longitudinal axis passing through a center of the vial and a body defining an interior containing a liquid and an indicator bubble. The level further includes a plurality of LEDs. Each of the LEDs has a light emitting point, and each of the plurality of LEDs is positioned adjacent an end of the vial and is oriented such that the light emitting point is positioned within the interior of the body of the vial.

A level includes a frame having a top planar surface, a bottom planar surface, and a web coupling the top planar surface to the bottom planar surface. The top planar surface and the bottom planar surface are parallel. The level further includes a vial supported by the frame. The vial has a longitudinal axis passing through a center of the vial and a body defining an interior containing a liquid and an indicator bubble. The level further includes a plurality of LEDs. Each of the LEDs has a light emitting point, and each of the plurality of LEDs is positioned adjacent an end of the vial and is oriented such that the light emitting point is positioned within the interior of the body of the vial.