There is a pupil gauge on the side of the penlight as well as a 5 cm ruler for convenience.
Give-away batteries will be sent once you buy Medical LED Penlight.
The Penlight is widely used for excellent for anyone in the medical field and as a mini flashlight.
The Nurse Penlight is made from aluminum alloy which is lightweight and easy to carry around in your pocket without weighing you down.
It is Deep Blue color and Emit White Light.It is packaged in a spongy like holder which protects the Nursing penlight from damaged.