Philips PM-2420 nixie DMM
A very nice Philips meter, probably made in 1968. It is a digital meter with nixies as display. A big contrast with my HP-410B, a huge vacuum tube equipped analog meter build in the same year. The meter only has 1 IC, a Philbrick-nexus opamp: The SQ-10a is a general purpose opamp from Philbrick. Philbrick … Read more