RIPPLE TANK ADVANCED WITH PROJECTION SCREEN 220V Type_Abacus supplying both current types to supplying both current types to a single workstation for circuits and electromagnetism the larger volume differential medium for whole class Enterobacteriaceae citrate utilization screening in microbiology No Need for Separate Overhead Projector Electronic strobe and control Inbuilt projection screen for easy view Foam beaches on tank Wave Generator unit Full range of accessories are included This advanced ripple tank from EISCO comes complete with all accessories needed for wave investigations The frame is made of reinforced plastic and with foam beaches ( to negate reflections) There is a mirror which can be mounted at 45 degrees to project the ripples onto a translucent screen on one side of the unit