The phrase "at equal height" is correct and usable in written English.
It can be used when describing two or more objects or points that are positioned at the same vertical level.
Example: "The two buildings were designed to stand at equal height, creating a balanced skyline."
Alternatives: "at the same level" or "on the same plane".
She recalls her great-grandmother having a picture of King on the wall of her living room – at equal height as Jesus.
The face is then rotated by, effectively placing both eyes at equal height, as shown in Figure 5. Once normalized for rotation, the face is geometrically warped in order to set the inter-eye distance to 40 pixels, chosen as a reasonable value to ensure effective performance of the subsequent recognition steps.
Measurements commenced at a distance of 5 m, with the 5.0 line optotypes of the chart and the eyes of the tested children approximately at equal height.
Repeat with the other board on the opposite side of the trunk, making sure both boards are at equal height and flush with one another.
Pull a builder's line from one end post to the other, at an equal height above the ground, preferably at the top of the post (if your posts were placed correctly).
Make sure that the tops of the cards are at an equal height.
An arrangement of one group of fins being at its maximum height and the other one at its minimum height, has shown very fascinating performance in comparison with all the fins being at their maximum equal height.
The four zones had equal height at each different level (apex, hilus, and base).
Heterozygous individuals were identified based on the presence of two peaks of approximately equal height at a single nucleotide site.
At the same time that lookouts spotted the signal buoy, Marshal Sergeyev said, arriving Russian warships detected and "directly observed the object itself on the bottom of the ocean that was of equal height of our submarine.
