A single fossilized footprint, roughly 1 meter long, has pushed paleontologists to redraw the upper limits of dinosaur size ...

Weston type 30, model 862 vu indicator with ‘B’ scale on RCA OP-6 portable amplifier. A Daven resistor network reduced the output from +11 dBm to telco-required +8 for 3 dB line isolation, sent the ...