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Antique Wm H Pfister Brass 13" Telescopic Level Transit Orig Box Cincinnati OhioAntique Wm H Pfister Brass 13" Telescopic Level Transit Orig Box Cincinnati Ohio $424.99 ~ Early Physics Demonstration Magnetic Dip Needle, signed ~~ Early Physics Demonstration Magnetic Dip Needle, signed ~ $185.00
Lot of (3) Early Brass 35mm Motion Picture Projector Lenses - circa 1897-1900Lot of (3) Early Brass 35mm Motion Picture Projector Lenses - circa 1897-1900 $270.00 1900 The National Engineer Steam Marine Electricity Hydraulics Chicago Ny Nr1900 The National Engineer Steam Marine Electricity Hydraulics Chicago Ny Nr $5.99
Eimer & Amend Scientific Apparatus Antique Copper Flask Warmer Steamer RareEimer & Amend Scientific Apparatus Antique Copper Flask Warmer Steamer Rare $99.99 Hauksbee Electrostatic Generator. ReproductionHauksbee Electrostatic Generator. Reproduction $349.99
Industrial Instruments Wheatstone Bridge Model Rn-2 - Very Good conditionIndustrial Instruments Wheatstone Bridge Model Rn-2 - Very Good condition $174.00 Antique Telegraph Works, Silvertown, London Gavanometer No. 5576 w/Leather caseAntique Telegraph Works, Silvertown, London Gavanometer No. 5576 w/Leather case $179.00
c1848 Daniel Davis Boston Joseph Henry Electro-Magnet Demonstration Helix Coilc1848 Daniel Davis Boston Joseph Henry Electro-Magnet Demonstration Helix Coil $845.00 Vintage Civil Defense Radiation Detector Victoreen 1961 Cold War Era RelicVintage Civil Defense Radiation Detector Victoreen 1961 Cold War Era Relic $69.99
Antique Ca. 1900 Brass Cornelius Knudsen Reflecting Circle SextantAntique Ca. 1900 Brass Cornelius Knudsen Reflecting Circle Sextant $379.00 Antique Weston Electrical Instrument Co Large Volts Gauge p1901 Newark Nj UsaAntique Weston Electrical Instrument Co Large Volts Gauge p1901 Newark Nj Usa $395.00
Yeast Fermentation Spores Cooking 90+ Y/O Ad Trade CardYeast Fermentation Spores Cooking 90+ Y/O Ad Trade Card $5.24 Was:  Previous Price $6.99 Antique Electric Slate Copper Knife Switch Electrical Fuse Panel. Nice!Antique Electric Slate Copper Knife Switch Electrical Fuse Panel. Nice! $588.00
New listing
		Vintage Set Of 4 Ammeters In Complete Box With Manual And KeyNew listing Vintage Set Of 4 Ammeters In Complete Box With Manual And Key $149.99 Vintage Leeds & Northrup Reflecting Galvanometer Made In The UsaVintage Leeds & Northrup Reflecting Galvanometer Made In The Usa $129.99
Antique Brass & Wood Taylor Thermometer Confectioner Tool Spirits LabAntique Brass & Wood Taylor Thermometer Confectioner Tool Spirits Lab $119.99 Big Classic Voland Precision Balance Model 1115-Cd 1 mgBig Classic Voland Precision Balance Model 1115-Cd 1 mg $2,495.00
Sextant. Troughton & Simms Ltd London. Mounted to Oval Wood Base.Sextant. Troughton & Simms Ltd London. Mounted to Oval Wood Base. $350.00 W & T Avery Agate Brass Balance Beam Scales Wood Base 61848 Large WeightsW & T Avery Agate Brass Balance Beam Scales Wood Base 61848 Large Weights $659.99
Auburndale Watch Co. Mass. 19th Century Victorian Framed Metallic ThermometerAuburndale Watch Co. Mass. 19th Century Victorian Framed Metallic Thermometer $390.95 1946 Weston Electrical Instrument Dc Voltmeter Model 45 Excellent Condition1946 Weston Electrical Instrument Dc Voltmeter Model 45 Excellent Condition $425.95
Antique 1800's Little Hustler Bipolar Electric MotorAntique 1800's Little Hustler Bipolar Electric Motor $99.99 Early Thales Pinwheel Calculator *Germany c.1915*Early Thales Pinwheel Calculator *Germany c.1915* $299.00
Antique Electric Railway Marble Copper Knife Switch Electrical Fuse Panel Sf CaAntique Electric Railway Marble Copper Knife Switch Electrical Fuse Panel Sf Ca $1,200.00 Antique Doctor Rainforth Stereoscopic Skin Clinic 1910 Odd Freak Medical DiseaseAntique Doctor Rainforth Stereoscopic Skin Clinic 1910 Odd Freak Medical Disease $499.95
19th Century Troughton & Simms London Leveling Instrument & Wood Case19th Century Troughton & Simms London Leveling Instrument & Wood Case $480.00 Antique Wirt Co. Voltage 150 Watt RegulatorAntique Wirt Co. Voltage 150 Watt Regulator $18.00
Vtg Babcock Centrifuge Bottle Bath Dairy Science Cream Tester Milk Nafis KimbleVtg Babcock Centrifuge Bottle Bath Dairy Science Cream Tester Milk Nafis Kimble $225.00 100W Ufo Led High Bay Light 110V for Warehouses Factories Supermarkets Stadiums100W Ufo Led High Bay Light 110V for Warehouses Factories Supermarkets Stadiums $19.24
Rare Vintage John Roach Surveyor's Pedometer! 1870'sRare Vintage John Roach Surveyor's Pedometer! 1870's $500.00 Antique Century Electric Co 1/3 Hp Single Phase Motor Frame M8 Type Rs 110/220VAntique Century Electric Co 1/3 Hp Single Phase Motor Frame M8 Type Rs 110/220V $99.99
Antique Willy Young & Co. Brass Secohmmeter Lab InstrumentAntique Willy Young & Co. Brass Secohmmeter Lab Instrument $239.99 Antique Wooden Case Weston D.C. VoltmeterAntique Wooden Case Weston D.C. Voltmeter $95.00
Antique Brass Medical Scales by Degrave & Co. Circa 1900Antique Brass Medical Scales by Degrave & Co. Circa 1900 $249.99 Two (2) Antique Bipolar Electric Motor Generator Spring Shaft Couplings 1/2 7/16Two (2) Antique Bipolar Electric Motor Generator Spring Shaft Couplings 1/2 7/16 $35.00
Pat Nov 2nd 1886 Prosch 1st Model "Duplex" (Not Triplex) Camera Shutter / LensPat Nov 2nd 1886 Prosch 1st Model "Duplex" (Not Triplex) Camera Shutter / Lens $278.50 18Th C. Continental Octagonal Brass Sundial/Astrolabe - 2 1/8" - Nice & Rare-B/O18Th C. Continental Octagonal Brass Sundial/Astrolabe - 2 1/8" - Nice & Rare-B/O $995.00
Rare Centennial Revolving Almanac John Balch 1837 Boston 1800 to 1900Rare Centennial Revolving Almanac John Balch 1837 Boston 1800 to 1900 $440.00 Was:  Previous Price $550.00 Tiffany & Co. 1858 Transatlantic Telegraph Cable - Cyrus Field with CertificateTiffany & Co. 1858 Transatlantic Telegraph Cable - Cyrus Field with Certificate $250.00
antique brass gauge mil-ammeter (frank s.betz co/jewell inst co-standard)antique brass gauge mil-ammeter (frank s.betz co/jewell inst co-standard) $174.00 Large Mid 19th Century Cast Iron and Brass Rotating Scientific Instrument c.1860Large Mid 19th Century Cast Iron and Brass Rotating Scientific Instrument c.1860 $2,800.00
Antique Ross Mensuration Geometrical Teaching Block Set, Original Crate 1900Antique Ross Mensuration Geometrical Teaching Block Set, Original Crate 1900 $469.99 Rare Antique 1910 Wagner 20 Hp 3 Phase Electric Motor Large Vintage MotorRare Antique 1910 Wagner 20 Hp 3 Phase Electric Motor Large Vintage Motor $900.00
Syphon Barometer Atmospheric Pressure Gauge 1915 Ad Trade CardSyphon Barometer Atmospheric Pressure Gauge 1915 Ad Trade Card $6.99 Antique Surveying Compass - Unsigned - Q1Antique Surveying Compass - Unsigned - Q1 $1,100.00
Old Chinese opium scale in shaped wooden caseOld Chinese opium scale in shaped wooden case $139.99 Antique Hand Crank Centrifuge - Dairy Farmer ToolAntique Hand Crank Centrifuge - Dairy Farmer Tool $50.00
Antique 1880's-90's Lightening Solenoid Arrester by Garton Daniels, steampunkAntique 1880's-90's Lightening Solenoid Arrester by Garton Daniels, steampunk $75.00 Antique Negretti & Zambra Aneroid Barometer Issued By Royal National Life BoatAntique Negretti & Zambra Aneroid Barometer Issued By Royal National Life Boat $150.00
Vintage Murakami Electric Works Tokyo Pattern Direct Reading Resistance Box woodVintage Murakami Electric Works Tokyo Pattern Direct Reading Resistance Box wood $99.99 Art Nouveau Antique Fire Alarm Supervisory Rare Board Bronze PanelArt Nouveau Antique Fire Alarm Supervisory Rare Board Bronze Panel $569.00
Antique Brass Surveying Transit Compass Measuring tool Cast Iron Legs Feet oldAntique Brass Surveying Transit Compass Measuring tool Cast Iron Legs Feet old $424.39 Was:  Previous Price $496.37 Vintage 18Th Century Wooden Compass Dividers Rev War Iron Caps 24" NauticalVintage 18Th Century Wooden Compass Dividers Rev War Iron Caps 24" Nautical $99.00
Antique 1890's Whitney Electrical Instrument Co Ac Dc Telegraph Wire OhmmeterAntique 1890's Whitney Electrical Instrument Co Ac Dc Telegraph Wire Ohmmeter $212.49 Was:  Previous Price $249.99 Wilde's Dynamo-Electric Machine Invention 1915 Ad Trade CardWilde's Dynamo-Electric Machine Invention 1915 Ad Trade Card $5.99 Was:  Previous Price $7.99
Rubicon Instruments Wheatstone Bridge Model #1052Rubicon Instruments Wheatstone Bridge Model #1052 $75.00 Fantastic Antique Brass Case Norton Voltmeter Gage Steampunk Zucker Levett LoebFantastic Antique Brass Case Norton Voltmeter Gage Steampunk Zucker Levett Loeb $129.99
Rare Antique Palo Co France Andrew J Lloyd Co Boston Pedometer Porcelain Clean !Rare Antique Palo Co France Andrew J Lloyd Co Boston Pedometer Porcelain Clean ! $490.50 Was:  Previous Price $545.00 Antique French Brass Cased Pocket Sundial, circa 18th CenturyAntique French Brass Cased Pocket Sundial, circa 18th Century $1,279.00
Vintage Chemistry Glass Lab Apothecary Science Medical Antique Tube.Vintage Chemistry Glass Lab Apothecary Science Medical Antique Tube. $39.00 Chemical Blow Pipe Antique Blow PipeChemical Blow Pipe Antique Blow Pipe $65.00
Rare Antique c.1850 Figural Renaissance Artist Raphael Metal Desktop ThermometerRare Antique c.1850 Figural Renaissance Artist Raphael Metal Desktop Thermometer $229.97 James Dewar Vacuum Flask Inventor Gases Chemist 90+ Y/O Trade Ad CardJames Dewar Vacuum Flask Inventor Gases Chemist 90+ Y/O Trade Ad Card $5.99 Was:  Previous Price $7.99
Early Radiology Crookes X-Ray Tube Sciagram 90+ Y/O Ad Trade CardEarly Radiology Crookes X-Ray Tube Sciagram 90+ Y/O Ad Trade Card $7.49 Was:  Previous Price $9.99 1900's Whitney Electrical Instrument Direct & Alternating Current Roller Ammeter1900's Whitney Electrical Instrument Direct & Alternating Current Roller Ammeter $179.95
Antique Brass Gas Carbide Lamp Light ? Scientific Instrument Signed B PrototypeAntique Brass Gas Carbide Lamp Light ? Scientific Instrument Signed B Prototype $2,605.50 Was:  Previous Price $2,895.00 Antique 1881 Electro Medical Galvanic & Faradic Apparatus Instrument Quack MedAntique 1881 Electro Medical Galvanic & Faradic Apparatus Instrument Quack Med $350.00
~ Early Percussion Powder-Tester, Eprouvette, Engraved, working order ~~ Early Percussion Powder-Tester, Eprouvette, Engraved, working order ~ $675.00 Vtg Antique French Compass Pendant Works Brass pocket compass France glassVtg Antique French Compass Pendant Works Brass pocket compass France glass $75.00
Late 1700s ~ Early 1800s Minty Spring Loaded Human Lancet Engraved Plated CasedLate 1700s ~ Early 1800s Minty Spring Loaded Human Lancet Engraved Plated Cased $396.00 Was:  Previous Price $495.00 Antique Retro Brass Field Microscope Marked Made in France Original PatinaAntique Retro Brass Field Microscope Marked Made in France Original Patina $115.00
Antique Vintage Weston Electrical Voltmeter Model 454 Wood HandleAntique Vintage Weston Electrical Voltmeter Model 454 Wood Handle $30.00 New listing
		Antique Brass Barrel Field Pocket Microscope Vintage Specimen EarlyNew listing Antique Brass Barrel Field Pocket Microscope Vintage Specimen Early $29.99
Vintage Rabone & Sons Machinist Spirit Level Made in England Fitting Wooden CaseVintage Rabone & Sons Machinist Spirit Level Made in England Fitting Wooden Case $199.99 Antique English Victorian Solid Oak Aneroid Banjo BarometerAntique English Victorian Solid Oak Aneroid Banjo Barometer $350.00
New listing
		Vintage Weston Electrical Ac & Dc Voltmeter Model 341New listing Vintage Weston Electrical Ac & Dc Voltmeter Model 341 $9.95 vintage Brass Nesting Apothecary Balance Scale Weights General Store Pharmacyvintage Brass Nesting Apothecary Balance Scale Weights General Store Pharmacy $25.00
~ Ca 1860 St. Louis Cased Gold Scale w/ Jacob Blattner Label, Calif Gold Rush ~~ Ca 1860 St. Louis Cased Gold Scale w/ Jacob Blattner Label, Calif Gold Rush ~ $245.00 Antique Laboratory Voltmeter, Weston Electric Instruments Model 6971, 1909Antique Laboratory Voltmeter, Weston Electric Instruments Model 6971, 1909 $265.00
Antique Victorian marble thermometer with Malachite inlayAntique Victorian marble thermometer with Malachite inlay $265.00 Craig LubricatorCraig Lubricator $19.99
Rare Torricelli founder o Hydrodynamics antique Theorem Demonstration ApparatusRare Torricelli founder o Hydrodynamics antique Theorem Demonstration Apparatus $250.00 Antique Drafting Drawing Set In Excellent Condition.Antique Drafting Drawing Set In Excellent Condition. $59.00
Antique Welch Scientific Electrical Apparatus Chicago IllinoisAntique Welch Scientific Electrical Apparatus Chicago Illinois $350.00 ~ Early Elec Milliamperes Meter Instrument, McIntosh Chicago, Good Condition ~~ Early Elec Milliamperes Meter Instrument, McIntosh Chicago, Good Condition ~ $85.00
Antique 1890's Taylor Instrument Companies Rochester, N. Y. Oil or Fluid BottleAntique 1890's Taylor Instrument Companies Rochester, N. Y. Oil or Fluid Bottle $21.00 Weston Electrical Instrument Company / Thomas Houston Electric Model 1 VoltmeterWeston Electrical Instrument Company / Thomas Houston Electric Model 1 Voltmeter $1,999.99
Antique Walters & Co London Circa 1900's Battery Electric On Off Switch DeviseAntique Walters & Co London Circa 1900's Battery Electric On Off Switch Devise $145.00 Early Spectroscope Apparatus Machine 90+ Y/O Ad Trade CardEarly Spectroscope Apparatus Machine 90+ Y/O Ad Trade Card $7.49 Was:  Previous Price $9.99
Unusual 19thC Antique French Brass Field Microscope-Dbl Column/Pillar-Wood CaseUnusual 19thC Antique French Brass Field Microscope-Dbl Column/Pillar-Wood Case $599.99 Functional Antique Replica Surveying Telescope with Wood Base. Estate Fresh.Functional Antique Replica Surveying Telescope with Wood Base. Estate Fresh. $115.00
Antique Boston & Sandwich Glass Obelisk Cut RĂ©aumur Thermometer Electric BlueAntique Boston & Sandwich Glass Obelisk Cut RĂ©aumur Thermometer Electric Blue $395.00 Vintage Drysdale-Tinsley Vibration Galvanometer No. 2416Vintage Drysdale-Tinsley Vibration Galvanometer No. 2416 $299.99
Sikes' Hydrometer I.P. Cutts Sutton & Sons Sheffield AntiqueSikes' Hydrometer I.P. Cutts Sutton & Sons Sheffield Antique $335.00 Vintage Weston Electrical Instrument Model 370 Ammeter Wood Case good conditioVintage Weston Electrical Instrument Model 370 Ammeter Wood Case good conditio $79.99
Antique Hydraulic Press Demonstration Apparatus By Es Ritchie & Sons Boston 1866Antique Hydraulic Press Demonstration Apparatus By Es Ritchie & Sons Boston 1866 $1,800.00 Early Spectroscope Apparatus Machine 1915 Ad Trade CardEarly Spectroscope Apparatus Machine 1915 Ad Trade Card $9.99
Vintage Ward Leonard Electric 3012 Vitrohm Rheostat Rotary Dimmer Switch? GreatVintage Ward Leonard Electric 3012 Vitrohm Rheostat Rotary Dimmer Switch? Great $99.99 Antique Brass Scientific Miniature Oil Lamp Projector Leveling Line ToolAntique Brass Scientific Miniature Oil Lamp Projector Leveling Line Tool $1,040.00 Was:  Previous Price $1,300.00
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Prices current as of last update, 10/14/19 8:33am.

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