Hello all, I have the following "vintage" manuals for sale: HP 522B counter $ 5.00 HP 5253B frequency converter (for 5245L counter) $ 10.00 HP 5440A digital DC voltmeter $ 10.00 HP 403B AC voltmeter (copy) $ 5.00 Prices are U$S plus S&H Thanks Joe Orgnero VE7LBI
