The phrase "a simple instrument that" is correct and usable in written English.
You can use it when describing a tool or device that is straightforward in design or function.
Example: "The device is a simple instrument that allows users to measure temperature accurately."
Alternatives: "an easy tool that" or "a basic device that".
When he was 15, he worked out an adaptation, written with a simple instrument, that met the needs of the sightless.
A simple instrument that can be used for assessing outcomes of a wide range of assistive technologies would be useful.
The BCD is a simple instrument that can be administered by the treating professional in around 1 min as part of the routine clinical interview, with results available immediately.
In this paper we present the design and preliminary validation (involving N = 754 Spanish secondary school students) of a simple instrument that, based on a 10-item Game Preferences Questionnaire (GPQ), classifies participants into four 'clusters' or types of gamers, allowing for easy interpretation of the results.
However, they are prone to some limitations, as the questionnaire is still, in its actual form, a relatively simple instrument that needs to be further developed and validated.
A recent review on spasticity assessment [13] concluded that there is a need for simple instruments that can provide reliable measures in a practical setting.
There is a need for simple instruments that are responsive, easily applied and rapidly interpreted.
15 There is a need for simple instruments that provide more structure to preventive work at primary healthcare centres (PCCs), and that are suited to the primary healthcare context.
Whereas HRQOL as a multidimensional construct, which necessarily includes the physical, emotional, social and functional aspects, we sought to create a simple instrument, with few items that would measure the HRQOL quickly and that could have applicability in daily oncology.
A few generations later, Eratosthenes of Cyrene (c. 276 c. 194 bce) devised a simple instrument with moving parts that could produce approximate mean proportionals.
We present work towards a simple, portable instrument that can predict the amount of green biomass in pasture.
