Intricate Instruments

Measuring instruments are the tools of the trade for electronic engineers and hobbyists. We cannot do without. As Lord Kelvin used to say, “To Measure Is to Know”. Besides tools, electronic instruments are interesting intricate electronic devices of their own, rewarding objects to build or repair.

Instruments I collected

During the years when I practiced my electronics hobby, I bought electronic instruments that I needed, if I could afford them. During all these years, a number of occasions occurred to obtain nice second hand professional measuring gear. As a result, I have collected a number of mostly old instruments to use, admire and analyse.

I have a a small collection of analogue multimeters using a moving coil meter movement. Then, of course, a lot of valved instruments are on the Valve Veneration page. Besides valve scopes, I have (or had) a number of scopes without valves (well, they do have a CRT):

• A, let's say, amusing Heathkit IO4560 scope,
• A Hameg HM207 scope I fixed for a friend,
• A unique home-built Elektorscope after the Elektuur design,
• A performing Tektronix 2235 scope that I use regularly,

• (to be added)

• A B&K 700 tube tester
• A Hickok I-177 tube tester

Instruments I built

• My FM stereo test signal generator, from an ELV kit
• A simple yet practical UTP cable tester.
• My microcontroller based FC7008 frequency counter from ELV kit
• My μA723 based 4-25V workbench power supply,
• My M13 High voltage supply, built after a Muiderkring design.