Scientific Instruments Collection<br />Chemistry Instr. #8<br /><br />instrument with eight terminals or knobs protruding from one long side of the box; blueprint paper with diagram of instrument's function is affixed to the underside of the lid; according to Kenyon College, this was "a standard piece of apparatus in most college and university electrical measurements laboratories for the first half of the 20th century" (PDF in vertical and digital folders)<br /><br />MEDIUM<br />wood, metal (brass?), plastic?, Bakelite?
Scientific Instruments Collection<br />Chemistry Instr. #9<br /><br />measures how much light is refracted or bent when shone through a liquid; a standard chemistry instrument; can also help organic chemistry students to identify compounds; battleship gray instrument with two feet with detachable spill tray; irregularly curved microscope-like shape; attached 110 volt power cord; with a carrying handle
Scientific Instruments Collection<br />Chemistry Instr. #5<br /><br />wooden lidded and hinged box containing balance weights of various weights; single balance weight in wooden block; Cenco No. 70537 tensiometer ring (cannot open); Cenco rubber balloon-like part - very similar rubber part was also displayed with the Höppler Viscometer; metal key; these parts were all grouped together in the Chemistry Department cases
Scientific Instruments Collection<br />Chemistry Instr. #6<br /><br />for measuring the object size under the microscope; a micrometer of a standard diameter (23 mm) that can be used on Ortholux I and II microscopes, as well as other models; the eyepiece magnification is 12.5x
Scientific Instruments Collection<br />Chemistry Instr. #7<br /><br />wooden case can be stood up vertically; four large glass pipettes with two-pronged stoppers, all connected by rubber tubing; possibly "apparatus of the Orsat type," as "ORSAT" is written in black oil crayon on the side of the case, and the Fisher manual title page indicates this as well
Scientific Instruments Collection<br />Chemistry Instr. #2<br /><br />originally three tubes, but the largest tube in our case is missing; remaining tubes: one is a zig-zag shape, the other straight; both have a hollow, bulbous section and are formed from colorless, transparent glass; a stalagometer is used to measure the surface tension of liquids using the "drop weight" method
Scientific Instruments Collection<br />Chemistry Instr. #3<br /><br />this instrument uses the Höppler principle to measure the viscosity of transparent Newtonian liquids and gases by measuring the time required for a ball to fall under gravity through a sample-filled tube; different balls will give different readings; box with balls and a rubber part made by Cenco were also grouped with this instrument in the Chemistry Department cases (measurements below)
Scientific Instruments Collection<br />Chemistry Instr. #4<br /><br />this lettering kit allows one to trace letters with a stylus, while simultaneously producing an exact duplication of each letter on another surface (drawing paper) by using the "Scriber" tool included in the kit; stored in a rectangular mahogany box with brass hooks to secure it; Harvard has a nearly identical instrument in its collection, inventory number 1989-4-0016; contents in remarks section<br />
Scientific Instruments Collection<br />Chemistry Instr. #1<br /><br />this instrument attachment consists of a rectangular mirror on an aluminum arm attached to a black, adjustable metal clamp that can be affixed to a microscope eyepiece; the small scale where the mirror attaches is numbered 15 to 75 to indicate the degree of the angle of the arm; the arm has a scale of 60 to 140 millimeters to indicate the distance of the mirror from the microscope
Scientific Instruments Collection<br /><br />Balance, wooden frame with glass doors, brass and metal balance inside. There are instructions and misc. items in the drawer.<br /><br />glass, wood, brass, metal
Scientific Instruments Collection<br/>Iron and wood machine with two glass wheels with metal plates attached to each. There are two glass jars on either side on either side of which the bottom portion is covered in metal.<br/><br/>glass, metal, wood
COLLECTION<br/>Scientific Instruments Collection<br/><br/>Glass tube with medal end cap. The other end of the tube expands into a bulb.<br/><br/>glass, metal
COLLECTION<br/>Scientific Instruments Collection<br/><br/>Glass tube with ornate black/brown flower sculpture in the middle with attachments for electrodes at the top and side.<br/><br/>glass, metal, wood
COLLECTION<br />Scientific Instruments Collection<br /><br />Longest Geissler tube with bow-tie bends at each end.<br /><br />Uranium glass, glass, metal
COLLECTION<br />Scientific Instruments Collection<br /><br />Geissler tube with three bulbs, the largest of which is in the middle and made from uranium glass.<br /><br />Uranium glass, glass, metal
COLLECTION<br />Scientific Instruments Collection<br /><br />Geissler tube bent into a diamond with the middle bend expanded into globes.<br /><br />Uranium glass, glass, metal
COLLECTION<br />Scientific Instruments Collection<br /><br />Geissler tube bent into a zig-zag shape. Half of the tube is made from uranium glass.<br /><br />Uranium glass, glass, metal
COLLECTION<br />Scientific Instruments Collection<br /><br />Geissler tube bent into a corkscrew which expands in the middle and contracts toward the ends. Half the spiral portion of the tube is made from uranium glass.<br /><br />Uranium glass, glass, metal
COLLECTION<br/>Scientific Instruments Collection<br/><br/>Geissler tube filled with phosphorescent powder which glows after current is removed. <br/><br/>glass, metal
