AMSCO 1920s Black / Dark Brown 2 1/8" 54MM 0-100 Indicator Knob with Set Screw NOS NIB London CS7004 This new old stock-testing matched

This new old stock-testing matched pair of US-made 1625 / VT-136 output triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box US-made number / type 89 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 81 while Tube Two measured 88

Bottles: tall

AMSCO 1920s Black / Dark Brown 2 1/8" 54MM 0-100 Indicator Knob with Set Screw NOS NIB London CS7004 This new old stock-testing matchedThis new old stock, new in box AMSCO knob is in good shape, especially considering it is 100 years old plus or minus. At its base, it is 2 1 16 inches wide. The top is 3 inches wide and the knobs height is 1 inch. The shaft diameter is 1 4 inch and there is a set screw. WE HAVE THOUSANDS OF VINTAGE ELECTRONIC ITEMS. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO