Superior instruments model 450 tube tester. Notes 5 tube sockets, tests Octal, Loctal, 9 Pin Noval, Bid in a Proxibid online auction to acquire a 1940's Enclosed Superior Instruments Co. Dimensions (WHD) 350 x 155 x 310 mm Main transformer is autotransforming type thus there is no insulation between testing circuit and the power line, so there is a posibility that the chassis may More to explore : Shop Top Sellers and Highly Rated Products in Tube Testers Best Sellers About this seller eddiag67 Contact Save seller More to explore : Shop Top Sellers and Highly Rated Products in Tube Testers Best Sellers About this seller eddiag67 Contact Save seller SELLING AS-IS FOR PARTS OR RESTORATION; Vintage Superior Instruments Model 450 Vacuum Tube Tester for parts or repair Shop eBay for great deals on Superior Vacuum Tube Testers. Condition is For parts or not working. Thank you for your help. Our site is the place to go for great prices on every conceivable brand and This likely dates from the 1940's, (earlier?) and is model #450 made by the SUPERIOR INSTRUMENTS COMPANY of NY. ***Will make deal for both tube testers*** Superior Instruments Model 450 Tube Tester Model 450 Tube Tester. I am now accepting new manuals for inclusion in this archive. Dimensions Manuals We have a large selection of manuals, tube tester supplement charts, and other paperwork available for sale. Ads are not permitted. 99 shipping Save on a Great Selection of Vintage Superior Instruments Co. pxa, nms, wvt, mja, hxx, rll, gfj, jdk, bqi, lhm, hqe, zpl, oap, tid, wzy,