$33.75

MICROSCOPE ILLUMINATOR Antique Spotlight Model 370 American Optical Co.

$10.99

Lot of 14 Forces of Valor ID Cards Tanks, Jets, Helicopters, Vehicles Unimax

$76.97

Vintage Busicom HL- 21 Pinwheel Mechanical Calculator 1960's Retro Display Prop

$160

Fisher Scientific hydrometers set of six w Exax 100 ml cylinder oil graduated

$16

Vintage Kimble Glass NIB Hydrometer Alcohol Wine Beer Historical Moonshine Note

$12.71

Lietz Conversion Chart No 3625-20

$4.28

1882 small magazine engraving ~ COMPOUND SUN-DIAL IN THE ELGIN COLLECTION

$16.2

Vintage Casio fx-350 Scientific Calculator with Instruction Manual Made in Japan

$89.99

West Germany Lufft Hygrometer Abbeon Relative Humidity Thermometer Jamaica NY

$249

64mm miniature Helmholtz Coil Science Experiment - (test area up to 14mm x 14mm)

$13.5

HYDROMETER Vintage In Metal Tube

$59

Vintage NOS LaMotte 5023 Model Morgan ST-M Soil pH Test Kit