A slot, screw, or sliding part can suggest that an object was adjustable. That suggestion becomes useful only when you identify what changes and what remains fixed. Otherwise, “adjustable” risks becoming a vague compliment rather than a description.
Start with the record or manufacturer’s documented account of the particular object. A screw might secure assembly rather than provide a setting for the user. A slot might guide movement, accommodate a fastener, or have another purpose that a photograph cannot establish.
Try this invented example: a desk support has a sliding upper piece and a fixed base. If its documentation says the upper piece changes the height, describe the moving component, the direction of movement, and the way a chosen position is held.
- Movement
- Which part changes position?
- Range
- Is a range documented, or merely suggested by the image?
- Retention
- What keeps the selected position in place?
Leave measurements blank if you cannot obtain them reliably. Do not infer the full range from one photographed position, and do not test an unfamiliar historical mechanism.
For a collection note, finish with the benefit that the evidence supports: a change in height, angle, or spacing. Claims about comfort, speed, or durability require additional evidence. Describing a mechanism precisely can make an ordinary object engaging without inventing a performance test.