Model SR-200/SR-200R Extension Sampling Rod

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Model AS-3 Extension Air Flow Indicator
Model AS-3 Extension Air Flow Indicator
Consists of dry batteries and pump attached on the handle of the extension rod for continuous air flow check up to 2 metres (Non-explosion proof type)....
Used with aspirating pump Model AP-1 (SR-200) and Model AP-20 (SR-200R) for gas detection vertically and horizontally unreachable positions of up to 2 metres.