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$39.99
Welch Scientific Air-Cooled Lab Rheostat 6.5 Amp 10 OHMS Variable Resistor Loc G
$38.00
Welch Scientific 85 Ohms 2.2 Amp Sliding Rheostat 85Ω 2.2A
$80.00
WM Welch Scientific Company Variable Resistor
$65.00
Welch Scientific Company Manual Hand Crank Disc Siren Base / Variable Resistor?
$70.00
Welch Scientific Decade Resistor Box 1 to 999 Ohm, 1 ΩVintage
$44.99
Vintage Welch Scientific 1.0 10 100 1000 Ohm Resistance Values Wood Case
$49.95
Welch Scientific 4 Position Decade Resistor. 01999.9
$40.00
Welch Scientific 3 Position Decade Resistor Substitution Box
$85.00
Vintage Welch Scientific Co Resistance Coil Kit # 2820 Resistivity Teaching Aid
$19.99
Vintage Welch Scientific Classroom Lab Variable Rheostat 35 Ohms
$59.99
Vintage Welch Scientific Co. 5 OHMS 9.2 AMP Variable Resistor Rheostat
$15.99
Vintage Test Equipment Resistance Box WM Welch Scientific Co Chicago
$99.00
New ListingSargent-Welch Wheatstone Bridge 2744E Resistance Tester Sci Lab Equipment
$38.00
CENCO Central Scientific 175 Ohms 1.5 Amp Sliding Rheostat 175Ω 1.5A
$149.99
Sargent-Welch Wheatstone Bridge S-29796-30 Resistance Tester Sci Lab Equipment
$55.00
340 Ohm 1.12 Amp Rheostat Variable Resistor
$62.95
Early Welch Manufacturing Decade Box - 0.1–100Ω Resistor Substitution, Clean
$250.00
Vintage Welch Scientific Co. Model 2392A Induction Coil 6-8V Ruhmkoff Coil
$35.00
Vintage Black Welch VOLT Meter Scientific Apparatus un tested 3026P
$250.00
Vintage Welch Scientific Company Inertia Demonstration Apparatus
$49.99
Sargent Welch Scientific 3720Z Transformer Mercury Ballast H38
$49.95
Welch Scientific 0-50 Outside Micrometer
$199.99
Welch Scientific 1399 Disto-Pump Belt Driven Vacuum Pump
$159.96
OEM SARGENT-WELCH Scientific Solid-State Induction Coil
$49.00
Lot Of 4 Vintage Welch Scientific Lab Spherometer
$99.95
Vintage W. M. Welch Scientific Metal Balance Scale
$59.00
Antique Welch Scientific Demonstration Electric Coil With Bulbs Steampunk
$24.99
Vintage W.M. Welch Scientific CO. Control Box
$19.99
Vintage Welch Scientific Galvanometer 2732 Art Deco Design Laboratory Device
$12.00
Vintage Workbench Laboratory DC Volt Meter Gauge WM Welch Scientific
$22.50
The Welch Scientific Company, 2192B Radioactivity Demonstrator **PARTS ONLY**
$59.87
Vintage Welch Scientific Co. Model 4030 Triple Beam Scale Cast Iron Chicago USA
$8.66
1927 W.M. WELCH Scientific Co. Catalog Of Apparatus Microscopes, Chemicals pumps
$349.99
Antique Welch Scientific Domed Glass Cloche Bell Jar Apothecary Lab Vaccum Base
$799.99
Welch Scientific Vacuum Pump & w/ GE 1/2 HP Motor 1 PH 1725 RPM Tested & Passed
$86.96
Sargent-Welch Scientific Ph Meter RB S-300II WORKING FREE SHIPPING
$77.00
W.M. Welch Scientific Adjustable Power Supply 2606B - Chicago White Rare
$30.00
1940s Welch Scientific Galvanometer Cat No 2732, Serial No 207281 - Works!
$269.00
1940s Welch Scientific 1775-1 Steam Demonstration - Mint Condition # 0788
$35.00
Vintage W. M. Welch Scientific Metal Scale
$84.00
Vintage Welch Scientific Balance Beam Scale
$55.00
The Welch Scientific Company Galvanometer Gauge 2732
$60.00
Sargent-Welch Scientific PH Meter Model EP Powers On As Is
$55.00
W.M. Welch Scientific Adjustable Power Supply 2606K - Chicago White Rare
$9.00
Vintage W.M. Welch Scientific Co. Chicago 9 oz 250 Grams Hanging Scale
$15.00
Vintage Welch Scientific Co. #3081T AC AMPERES METER AS-IS Bakelite Gauge
$299.00
Welch Scientific Co Shortwave Radio 2612
$19.99
Vintage W.M. Welch Scientific Co. Chicago 250 Grams Spring Scale ( GG3A)
$29.99
VTG W.M. Welch Scientific Co. D.C. Ammeter 3057U Steampunk Bakelite LEATHER STR
$18.00
DC Amperes W M Welch Scientific Company Cat No 3031M
$49.00
Welch Scientific Apparatus 1934 With Separate Catalog And Order Sheet NRA Stamp
$140.00
Vintage W.M. Welch Scientific Co. Spectroscope
$30.00
Vintage W. M. Welch Mfg. Co. Ammeter Scientific Apparatus - Chicago, IL USA
$20.00
Vintage The Welch Scientific Co. A.C. Milliamperes Meter NO. 3081R Chicago ILL
$49.69
Welch Scientific 2606K AC/DC Power Supply 115V Vintage - USED
$15.00
SERGENT-WELCH SCIENTIFIC 3346B RIPPLE TANK OSCILLATOR untested for parts repair
$199.99
W.M. Welch Scientific Company Electromagnetic Ring Launcher
$47.98
Vintage Black Welch Scientific Company Galvanometer Chicago, ILL. - UNTESTED
$511.75
Early 20th Century Piston Cutaway Demonstrator by Welch Scientific
$20.00
Vintage Welch Decade Resistor Resistance Box
$48.00
Welch Scientific 3028J AC Milli-Ammeter mA Meter
$59.99
VINTAGE ANTIQUE WELCH CONTROL BOX SCIENTIFIC BAKELITE BLACK WELCH COMPANY LOT B
$349.99
J.L. William Scientific Instruments 10 Ohm Cal Standard DC Resistor (SN: 3198)
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welch scientific resistor Information
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welch scientific resistor
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