A painting assembly for a distance measuring wheel includes: a main body; a connecting device disposed on the main body and configured to connect the paining assembly to an arm member of the distance measuring wheel; a paint can fixing device disposed on the main body and configured to fix a paint can installed to the painting assembly; a communication device configured to receive a control signal for controlling a driving device; and the driving device connected to the main body and configured to: in response to the control signal, control a paint spraying state of the paint can.

The post system of the present invention is formed from a cap and a base. The cap sits flush with the ground while the base system extends into the ground towards the underground hazard. The cap is removable to access a tracer station or similarly-mounted integrated steel plate. The cap includes a superior disk, a cap housing, and a locking mechanism. The base includes an anchor system and two telescoping assemblies nested within the base so as to raise the test station or steel plate above ground level.

The post system of the present invention is formed from a cap and a base. The cap sits flush with the ground while the base system extends into the ground towards the underground hazard. The cap is removable to access a tracer station or similarly-mounted integrated steel plate. The cap includes a superior disk, a cap housing, and a locking mechanism. The base includes an anchor system and two telescoping assemblies nested within the base so as to raise the test station or steel plate above ground level.

A device and method for marking indicia on terrestrial surfaces implemented in topographical surveying comprises is described; the device includes: a support element connectable to topographic surveying instrument, a container holder and paint container; an actuator; at least one nozzle configured to reversibly assume: a divergent configuration and convergent configuration; at least one driving mechanism, for driving the nozzle between the divergent configuration and convergent configurations and an outlet to dispense the paint on the terrestrial surface; the method includes: selecting a point of interest on a terrestrial surface; positioning the pointed tip; determining geographical coordinates; activating the actuator, dispensing the paint form the outlet; altering the configuration of the nozzle between the divergent and convergent configuration.

A device and method for marking indicia on terrestrial surfaces implemented in topographical surveying comprises is described; the device includes: a support element connectable to topographic surveying instrument, a container holder and paint container; an actuator; at least one nozzle configured to reversibly assume: a divergent configuration and convergent configuration; at least one driving mechanism, for driving the nozzle between the divergent configuration and convergent configurations and an outlet to dispense the paint on the terrestrial surface; the method includes: selecting a point of interest on a terrestrial surface; positioning the pointed tip; determining geographical coordinates; activating the actuator, dispensing the paint form the outlet; altering the configuration of the nozzle between the divergent and convergent configuration.

A set of collated plastic markers. The markers have a small cross-section relative to conventional plastic markers, yet are easily insertable into the ground manually or with a marker installer and stiff enough to stand up as an indicator. Each marker comprises a shaft and a flag. The shaft comprises an insertion portion, a mast, and an engagement portion. The insertion portion is substantially wedge shaped and the engagement portion is configured to provide a push surface for manual insertion or to cooperate with a marker installer. The shafts are collated before or after flags are attached and held together in a spaced-apart arrangement with one or more connectors. Preferably a set of collated shafts is molded of plastic, the shafts attached to each other with connectors that can be pulled apart by hand or sheared off with a maker installer to separate the markers from one another during installation.

A set of collated plastic markers. The markers have a small cross-section relative to conventional plastic markers, yet are easily insertable into the ground manually or with a marker installer and stiff enough to stand up as an indicator. Each marker comprises a shaft and a flag. The shaft comprises an insertion portion, a mast, and an engagement portion. The insertion portion is substantially wedge shaped and the engagement portion is configured to provide a push surface for manual insertion or to cooperate with a marker installer. The shafts are collated before or after flags are attached and held together in a spaced-apart arrangement with one or more connectors. Preferably a set of collated shafts is molded of plastic, the shafts attached to each other with connectors that can be pulled apart by hand or sheared off with a maker installer to separate the markers from one another during installation.

Disclosed is a monitoring method wherein: a target is prepared using terrain model data including terrain location information; at a first time, an image of the target is picked up by means of an image pickup unit of a surveying device, and first image data is generated; at a second time after the first time, an image of the target is picked by means of the image pickup unit of the surveying device, and second image data is generated; and displacement of the target is detected using a first image based on the first image data, and a second image based on the second image data.

Disclosed is a monitoring method wherein: a target is prepared using terrain model data including terrain location information; at a first time, an image of the target is picked up by means of an image pickup unit of a surveying device, and first image data is generated; at a second time after the first time, an image of the target is picked by means of the image pickup unit of the surveying device, and second image data is generated; and displacement of the target is detected using a first image based on the first image data, and a second image based on the second image data.

A method including: recording a first image of a first field region; automatically treating a plant within the first region in-situ based on the first image; automatically verifying the plant treatment with a second image of the first region; and automatically treating a second region concurrently with treatment verification.