These 3 PHILIPS CERAMALUX 70W CLEAR HIGH PRESSURE SODIUM have never been used. The packaging does show signs of shelf-wear. Cat: C70S62/ALTO Mfr: Philips, Philips Lighting Mfr Part Number: C70S62/ALTO Mfr Code: 36869-6 Product Categor
The analogue Radio Shack 33-2050 Sound Pressure Level (SPL) meter is useful for measuring sound intensity, determining speaker sensitivity or developing quick frequency response plots for loudspeakers. Power analogue SPL meter is supplied by a single 9-volt battery, which make the meter very portable portable. At the bottom of the meter is a screw mount which cab be used to attached the SPL meter to a tripod.
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