The phrase "at the upper edge" is correct and usable in written English.
It can be used to describe a location or position that is at the top boundary or limit of an object or area.
Example: "The painting was hung at the upper edge of the wall, drawing attention to its vibrant colors."
Alternatives: "at the top edge" or "along the upper boundary".
This 26percentt is the risk if one lives at the upper edge of the 100-year flood "fringe," the regulated outer zone of a flood plain.
Richards, by locating at the upper edge of the lower end, boosted the area's prestige over a three-year development and construction period.
The park is a 360-square-mile patch of grasslands and jungle near the border with India, at the upper edge of the great Ganges plain.
Trees growing at the upper edge of their altitudinal range can be highly sensitive to even modest changes in atmospheric temperature.
In the sixth test, fractures initiated at the inside face of the column flange at the upper edge of the weld access hole of the CJP weld detail.
A rotating unit consisting of two pairs of modules fixed at an angle of 170° between them was installed at the upper edge of the stand.
In "Castle on Shore at Sunrise," the upper edge of a blur of blue watercolor dips just so, to indicate the sun just clearing but also burning through a cloud.
Skin incision started from the proximal part at the level of the upper edge of the patella, located midway between the medial epicondyle of the femur and the medial edge of the patella, directing them towards the area of upper-medial tibial tuberosity.
The procedure of integrating the patch clamp micropipette started by CNC drilling of a hole that extended at 45 degrees from the upper edge of the microfluidic chamber to the intersection zone within the T-shape microfluidic channel.
This ensures that the field of view of the cameras, which are located along the upper edge at the back of the tablet in this orientation, covers the walking area in front of the user in which obstacles are to be detected.
This is can be seen in Figs. 5a and 5b, showing each hair separately at true depth relative to the upper edge of the transducer plane.
