Frequeny Counter Crystal tester
Description
Box for the Frequency counter, originally designed by Wolf Buescher, and later extended with a crystal tester. Printed with 0.2mm and no supports needed. It was designed for use of M3 5mm long brass inserts. The outer diameter is said to be 4.2mm, but my chinese stock measured 4.1mm and this design is adjusted accordingly. For the power it uses DC-022B power plug and for the frequency signal two JS-910B banana plugs mounts.
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