550pF X4 Variable Capacitor Four Gang Air Spaced

This is one item of used, quad gang air spaced variable capacitor recovered from a 1960's valve radio. Each section has a maximum capacitance of 550pF and a minimum of 14pF.  The turning shaft is 0.25" 6.3mm diameter and 10mm long.  The suitable knob is included.  The sections could be connected together to form a 2200pF variable for VLF tuning.

Here are some example projects where you could use such a part:

Crystal Set One
https://www.interestingelectronics.com/old/henrys_interesting_electronics/loud_crystal_set_radio/loud_crystal_set_radio.htm

Crystal Set Two
https://www.interestingelectronics.com/old/henrys_interesting_electronics/crystal_radio_v2/crystal_set_radio_v2.htm

Choccy Block Crystal Set Radio Kit
https://www.usefulcomponents.com/main_contents/projects/choccy_block_crystal_radio/choccy_block_crystal_radio.html

Tuned Loop Aerial
https://www.interestingelectronics.com/old/henrys_interesting_electronics/am_radio_loop_aerial_booster/mw_lw_am_loop_aerial_antenna.htm

Superheterodyne MW AM Radio
https://www.interestingelectronics.com/old/henrys_interesting_electronics/mediumwave_radio/mediumwave_radio.htm

The Ladybird Book "Learnabout... Making a Transistor Radio." Radio
https://www.interestingelectronics.com/old/henrys_interesting_electronics/ladybird_radio/ladybird_radio.htm

Breadboard Six Transistor MW AM Radio Kit
https://www.usefulcomponents.com/main_contents/projects/breadboard_trf_radio/breadboard_trf_radio.html