Swing Gate Turnstile Science Museum Timed Slot Entry Control System 550mm Channel Product Description A science museum is not a single queue at a single door. School groups arrive in batches of forty, families come with strollers, members return for a specific workshop and weekend visitors book a timed slot months ahead. Without lane-level control, the exhibition hall either overfills or the front desk spends the morning counting people by hand. This swing gate turnstile