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Giveaway -  a 1949 Vacuum tube voltmeter Given the mention of Heathkit in the January 4 Muse, and the focus on history in both of this month's Muses, this month's giveaway is a circa 1949 VTVM from Heathkit. Enter the contest here.

The Write Only Memory was a fake part Signetics introduced April Fool's day many decades ago. It's a hoot. Here is page 1, and this is page 2.