Meldes Vibrating String Apparatus, consists of a string and an oscillator to generate different frequencies, Requires 6 V, 50 Hz power source, with 4mm plug leads, Weight (lb): 1.4, Length (in):11.0, Width (in):6.0, Height (in):3.0
Includes a 125mm stainless steel probe with a 150cm cable. Features an on/off switch, data hold, and min/max memory. Range: -50 to 200 [degree] C. Resolution 0.1 [degree]. Accuracy: +/- 0.5 [degree] to 70 [degree] C; +/- above 70 [degree] C.
Spectrum Discharge Tube, Mercury Gas to show spectral lines of pure substances. Tubes approximately 260mm long, central capillary portion approximately 3-1/2 to 4 (90-100mm) long with electrodes sealed at both ends and connected to lead wires protected by metal caps