Used Rechargeable Handle 0.4mm graded circle test (400 to

graded circle test (400 to 20 seconds of arc)

The Stereo Butterfly tests and evaluates random dot stereo depth perception for both gross stereopsis (2500 to 1200 seconds of arc) and fine depth perception

Each Pachette 4 pachymeter includes an electronic calibration standard

Replacement battery for Reichert Tonopen Avia

Used Rechargeable Handle 0.4mm graded circle test (400 toWelch Allyn's 71670 3. 5V rechargeable handle Features: Accepts all Welch Allyn 3. 5v instrument heads. Recharges in the Welch Allyn desk charger and numerous stand consoles and well chargers. Includes 1 battery All of our used equipment comes with a 30 day warranty *handle will have either a green or red button.