Interval Scale

Instructions on how to install LabBench

Represents a numerical rating scale with discrete, equally spaced values. Used to collect interval-based responses such as Likert or numerical rating scales.

Availability:

context.Instruments.<IntervalScaleName>

Properties

Name	Type	Description
`Maximum`	`int`	Maximum value of the scale.
`Minimum`	`int`	Minimum value of the scale.

Methods

Name	Signature	Description
`GetCurrentRating`	`GetCurrentRating()` → `int`	Returns the current rating selected on the scale.
`GetIntervalRating`	`GetIntervalRating()` → `int`	Returns the current rating value (same scale domain as `Minimum` to `Maximum`).
`SetIntervalRating`	`SetIntervalRating(rating: int)` → `None`	Sets the current rating on the scale. Updates the device state.

Typical usage example

scale = context.Instruments.IntervalScale

# Read current rating
rating = scale.GetCurrentRating()

# Set rating programmatically
scale.SetIntervalRating(5)

# Access scale bounds
min_val = scale.Minimum
max_val = scale.Maximum

Notes / gotchas

Valid rating values are within [Minimum, Maximum]; behavior outside this range is undefined.
SetIntervalRating directly modifies the device state and may affect participant interaction.
GetCurrentRating and GetIntervalRating return integer values; no fractional ratings are supported.

Last modified May 21, 2026: Device server implementation (#1375) (5dd5648d)