The phrase "a simple device for" is correct and usable in written English.
It can be used when describing the purpose or function of a device in a straightforward manner.
Example: "This is a simple device for measuring temperature accurately."
Alternatives: "an easy tool for" or "a basic instrument for".
Zhang used a very complicated form of a simple device for finding primes called a sieve, invented by a Greek named Eratosthenes, a contemporary of Archimedes.
Technologies that transform a cellphone into a simple device for making payments are finding their way into the marketplace in Europe and Asia, and soon will be seen as a convenient banking tool here.
"A Computer Which Will Solve Every Problem in the World," made in 1984 and installed on Twenty-first Street, is a simple device for counting from three to twelve — and thinking carefully in the process about perception, sameness, and variation.
The companies included Shaka, which makes a simple device for measuring wind for sailboard and kite surfers, and Kindara, maker of an iPhone accessory to help women determine when they are ovulating.
A simple device for optical alignment of the fibers and capillary column was designed.
In this note we describe a simple device for collecting radio-labeled carbon dioxide from a standard culture flask.
Although conceptually the gas-turbine engine is a simple device, the components for an efficient unit must be carefully designed and manufactured from costly materials because of the high temperatures and stresses encountered during operation.
Additionally, a simple device test strip for rapid and on-site detection of Cu2+ has been designed by immobilizing the RL-CdTe@SiO2 QDs on a common filter paper.
The story says that many of today's credit and debit cards have RFID chips built into them (as do new passports here in the US), and that a person so inclined could be able to rig together a simple device that scans for these chips.
Which is problematic for adults hungry for a simple device that makes all their other digital ephemera obsolete.
Because most of the commercially available grabs and soil corers currently used do not fulfill these requirements, a new, simple device for sediment sampling was designed in the framework of the European Union (EU -funded ASIAREU -fundedect.
