Sanborn 500 viso-cardiette portable ECG chart recorder This chart recorder takes 2.5" thermal paper. The controls include an off/on/run knob, a test button, an intensity knob
HD400 Heavy Duty Paving Chairs 4" Coverage, Maximum Rebar #13 HD Paving Chair / Dolbe is used in on-grade construction for slab work. Its high strength and stable design makes this the spacer of choice for quality construction. Universal Dolbe Application.
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