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leeds and northrup wheatstone bridge model 4735

$ 39.6 $ 23.76

RARE Arthur H Thomas Co Medical LARGE COPPER SANITIZER CABINET INCUBATOR

$ 263.99 $ 158.39

Curta type II Calculator *****

$ 1144 $ 686.4

Leeds & Northrup 4735 Wheatstone Bridge US Army

$ 56.99 $ 34.19

Antique Ammeter Old Electric Auto Gauge Buick brothers,Everready,Weston Gauges

$ 66 $ 39.6

Doctors Stethoscope Ear Trumpet Hearing Pipe Amplifier Military

$ 43.99 $ 26.39

Curta Calculator Type 1 Case s/n 55576 Machine Mechanical Read Repair - 1963

$ 703.99 $ 422.39

Antique KEUFFEL & ESSER BRASS SURVEYORS LAND COMPASS on WOOD BASE #02417

$ 66 $ 39.6

Orrery: Handcrafted Clockwork Solar System, Brass or Semi-Precious Stone Planets

$ 963.6 $ 578.16

Bacharach Sling Psychrometer - See Description

$ 35.2 $ 21.12

Vintage Eye Surgery Instruments

$ 1.76 $ 1.05

Vintage chronometer box, green felt lined with leather strap no markings

$ 13.15 $ 7.89

Vintage A CAIRNS SEXTANT 2681 ORIGINAL BOX US NAVAL OBSERVATORY R-30922 #02340

$ 308 $ 184.8

Compass Instrument & Optical Co. Inc Vintage Swiss Stop Watch Model No. 396

$ 22 $ 13.2

Cloud chamber (Wilson chamber) Observe decay of atom.

$ 145.19 $ 87.11

LARGE LOT SCIENTIFIC OPTICS BOOK LOT

$ 43.99 $ 26.39

Lufft Durotherm Hygrometer - Model 4007 Certified - Brass & Glass - Germany

$ 43.99 $ 26.39

Transistors Bell Labs Circuit Board 44 Yr Old Mint Vintage Stamp Block from 1973

$ 4.39 $ 2.63

Antique Stansi Scientific Division vacuum pump bell jar vtg Local Pickup CA

$ 83.6 $ 50.16

Vintage Danforth White Nautical Wind Velocity Gauge Glass Face Used Untested

$ 66 $ 39.6

Orion Research Perchlorate Ion Electrode 938100 Model 93-81

$ 118.8 $ 71.28

Minty Vintage 1960s Curta Calculator Type I W/Original Matching # Box Papers

$ 1319.99 $ 791.99

(Two) POLYGRAPH Machines Diplomat 1 Lafeyette (( Not Working For Parts ))

$ 175.89 $ 105.53

circular slide rule Stadia computer MINT

$ 30.56 $ 18.33

Vintage Lehmann 2073d Engine with box. Green color

$ 70.39 $ 42.23

American Basic Science Weather Station *sealed Wind Speed Gauge Part Only* 1962

$ 0.87 $ 0.52

Antique Hoyt D.C. AMPERES Electrical Gauge *POWERPLANT*

$ 83.55 $ 50.13

Collectible A.C. Ammeter in Oak Case

$ 17.6 $ 10.56

Cary Tolbert 1 Liter Ion Chamber 1950's Rare

$ 166.32 $ 99.79

Hamilton Bell Co. Inc Paterson Surgical Precision Kit Scalpel Dropper Vintage

$ 6.5 $ 3.9

Vintage Central Scientific Laboratory weight set

$ 13.15 $ 7.89

Welch Scientific Wind Sock Static Electricity Demonstrator Scientific Educationa

$ 11.39 $ 6.83

Vintage 1930s/40s Leeds & Northrup Reflecting D'Arsonval Galvanometer !

$ 72.16 $ 43.29

Cameron Heart-O-Meter, Chart, Medical Vintage 1920s Art Deco

$ 136.4 $ 81.84

Vintage Sputnik Weather Station

$ 44 $ 26.4

Vintage LOT of (3) Brass US Standard Sieve 8" Fisher Scientific Company

$ 43.95 $ 26.37

Taylor Instrument Co 1328 A 9" Sling Psychrometer

$ 35.87 $ 21.52

Vintage Fairchild Space and Defense Systems PEAK 7X Inspection Lens made inJapan

$ 21.95 $ 13.17

Eaglemoss Build A Model Solar System Issue 11 w/ Planet Gears/Arm

$ 31.67 $ 19

Eaglemoss Build A Model Solar System Issue 22 w/ 106-Tooth Gear

$ 31.67 $ 19

Antique Vintage Style Brass Encampment & Fortification Surveyors Compass

$ 22 $ 13.2

Antique Telegraph Key? Sounder? Register? Queen & Co Pliladelphia

$ 26.4 $ 15.83

POLYGRAPH Machine Diplomat 1 Lafeyette (( Not Working For Parts ))

$ 87.89 $ 52.73

PRECISION MODEL 107C "PROFESSIONAL" RADIATION GEIGER COUNTER - 1950'S-1960'S

$ 87.99 $ 52.79

Curta calculator all metal Type I, 1959 w/can+ 3 manuals in PERFECT WORKING ST

$ 1403.6 $ 842.16

Rare Vintage Unusual Biddle 2 Way Switch Insulate Discharge

$ 44 $ 26.4

Vintage Marble’s Gladstone Brass Compass Pin Michigan USA - Working Condition

$ 8.79 $ 5.27

Belfort Instruments Pyranograph Model 5-3850A Chart Recorder

$ 308 $ 184.8

Vintage antique electric motor vohr converter

$ 13.2 $ 7.91

Vintage "Lucky Strike" Geiger Counter Model 106B Civil Defense ?

$ 30.79 $ 18.47

Feild's Hydraulics Calculator for Gravity Flow in Pipes 1950

$ 22 $ 13.2

Bristol Recorder Electric Volt Meter Waterbury Conn Vintage Steam Punk

$ 57.2 $ 34.32

Vintage BioRhythm Calculator Device by Biomate w/ Guide

$ 0.87 $ 0.52

Set of 6 Central Scientific Princo 16" Thermometers from -36 to 680F Pre-owned

$ 114.35 $ 68.61

Outstanding Type ll CURTA mechanical calculator no. 532589 with manual

$ 862.4 $ 517.43

1969 The Sager Weathercaster in Original Box with Instruction Manual

$ 14.07 $ 8.44

Vintage Maximum Weather Instruments Radiant Wind Direction Gauge Merlin

$ 87.95 $ 52.77

Large group of scientific and chemistry items

$ 98.56 $ 59.13

4- Antique Medical Hard Rubber Irrigation Syringe. TIPS

$ 35.19 $ 21.11

LARGE LOT SCIENTIFIC OPTICS BOOK LOT

$ 43.99 $ 26.39

Weston Model 924 meter Steampunk Industrial Art AC 1-500 Gauge Metal Box Volts

$ 29.33 $ 17.59

Vintage Hoyt Electrical Instrument Voltammeter 161 Wood Case Penacook NH USA

$ 16.72 $ 10.03

vintage rubric instruments Wheatstone bridge

$ 52.8 $ 31.67

Antique Thomson Ammeter General Electric Company NP4777

$ 25.52 $ 15.31

Vintage Hamilton Bell Co. Inc Dissection Kit

$ 7.03 $ 4.21

RARE Bottle Etched GLASS Ammonium Hydroxide + Stopper Chemistry WHEATON STEM NOS

$ 12.32 $ 7.39

Eaglemoss Build A Model Solar System Issue 24 w/ 85-Tooth Gear for Jupiter

$ 35.19 $ 21.11

Vintage Consolidated Electrodynamics Corp. Galvanometer Lifting Tool 214888

$ 17.6 $ 10.56

VINTAGE STACKING BRASS SIFTER 4-PIECE GRADUATING SCREENS

$ 26.39 $ 15.83

Lot of Four Glass Laboratory Alcohol Burners

$ 3.52 $ 2.11

Orig Vintage C.R.C. Laboratory supplies & equipment w ASBESTOS; 1273pgs, 1958

$ 95.82 $ 57.49

2- Antique Medical Hard Rubber CHECK VALVES

$ 35.19 $ 21.11

ROLLED 1999 FRENCH CANADIAN PERIODIC TABLE of ELEMENTS POSTER 25 x 38 inches

$ 8.79 $ 5.27

Vintage Fairchild Space and Defense Systems PEAK 7X Inspection Lens made inJapan

$ 22 $ 13.2

Vintage Lot 8 Used Laboratory Glass Stirring Sticks Chemists Mystery Pieces

$ 48.4 $ 29.04

Vintage Maximum Weather Instrument Wind Speed MPH Miles Per Hour Gauge Maestro

$ 44 $ 26.4

Vintage CENCO Scientific Laboratory Aluminium Tube Clamp Screw Claw

$ 25.52 $ 15.31

vintage FOCAL Microscope Dissection Kit

$ 17.6 $ 10.56

Bomex 600ml Glass Beaker Estate Sale Find

$ 2.64 $ 1.58

Pre Owned Vintage Taylor Hygrometer Relative Humidity Kit

$ 21.95 $ 13.17

Vintage Weston Model 476 AC Ammeter Art Deco Enclosure

$ 17.55 $ 10.53

CLAY-ADAMS vintage Army?Medic? Dissection Tools Kit in canvas pouch

$ 13.19 $ 7.91

Central Scientific Company Scale Weights and Tweezers in Mahogany Box.

$ 30.8 $ 18.48

VINTAGE WIND SPEED INDICATOR AIRGUIDE MODEL 919 WINDIAL Very Nice

$ 25.52 $ 15.31

EARLY 1900S SET OF DENTAL TOOTH POWDERS AND CEMENT

$ 49.27 $ 29.56

Vintage Biomate Biorhythm Calculator Device w/Application Guide & Satin Bag VNC

$ 4.35 $ 2.61

Herter's Fish Depth Finders, Original papers, Tubes w/Thermometers, Calibrations

$ 62.48 $ 37.48

VINTAGE GISCHARD GERMANY ALTIMETER 0-16,000 FEET LEATHER CASE hiking scouts bsa

$ 35.2 $ 21.12

Transistors Bell Labs Circuit Board 44 Yr Old Mint Vintage Stamp Block from 1973

$ 4.39 $ 2.63

circular slide rule Stadia computer MINT

$ 30.56 $ 18.33

Arthur H Thomas Co Medical Stopwatch

$ 88 $ 52.8

Vintage LOT of (3) Brass US Standard Sieve 8" Fisher Scientific Company

$ 43.95 $ 26.37

Vintage GENERAL ELECTRIC “THE STORY OF X-RAY” BOOKLET

$ 13.19 $ 7.91

Vintage Megger Insulation Tester Variable Voltage Midget Type James G. Biddle Co

$ 66 $ 39.6

Vintage Hydrometer Sp Gr Heavy Liquid, 1.200-1.420 W/ Box Central Scientific Co

$ 17.59 $ 10.55

Curta Calculator all metal Type I, 1961 w/can, manual EXCELLENT, PERFECT WORKING

$ 1535.6 $ 921.35

No 325 HUGE 8" Sieve Brass Tyler Standard Testing Siftner Screen Scale 26186R

$ 35.15 $ 21.09

No 100 HUGE 8" Sieve Brass Newark Testing Siftner Screen Scale 26189R

$ 35.15 $ 21.09

No 325 HUGE 8" Sieve Brass Tyler Standard Testing Siftner Screen Scale 26185R

$ 35.15 $ 21.09

VINTAGE Casio SR-5 BK Calculator with printer , EXTRA PAPER ROLLS

$ 17.59 $ 10.55