1996.29.1 (Scientific Instrument)

Specific gravity balance - Sixteen parts: a - p. a. Box. Wooden with hinged lid. Two hook closes on front "Fisher Scientific Co." tag mounted on front lid, center. Interior of box. "Made in Germany" stamped into front rim. Interior of box has wooden dividers and braces to hold the balance, weights, jar, etc. in place. Iowa State Teacher's College #10807 tag on underside of lid. b. Brass balance base. 3 legs; one leg is a screw. Adjustable height neck white, plastic rectangle with 15 tic marks that measure 1.5 cm. This is where the needle of the balance beam points. There is also a cradle for the balance beam on the upper right part of the balance. c. Balance beam has 9 steel pegs for carrying different weights. There is a nedle on the left-hand side. The beam rests on top of the balqance. d. Double-compartment jar. A glass tube shaped in an open figure 8. 13.7 cm tall with a small notch carved into the samller compartment. This jar sits on a glass base approx. 7.8 cm in diameter. e. Thermometer, 0 - 30 C. Bent in approx. 145 degree angle. A hook in the middle of thermometer rests on notch in double compartment jar. f. Glass plummet with wire strung through glass hook at top. Wire attaches plummet to brass weight with hook. Brass weight can be placed on peg on beam. 21 cm long from brass hook to bottom of plummet. g. Brass tweezers 9 cm long. h. Weight pan made of brass, nickel plated. Pan 4 cm diameter. Hook on underside, wire hanger on top. I. Perforated glass pan with 3 platinum wires forming a hanger. Pan approx. 4.8 cm in diameter. j. Brass weight. Cylinder shape with 5 cm brass hook. k,l. Metal weights, cylinder shape with one hook on top and one on bottom. m. Brass weight. Open rectangle in center with glass lining bottom of rectangle. Sides of weight have two "wheels" attached. Hook on top. n. Platinum wire loop 1 cm in length. o. Metal hook 3.4 cm in length. One hook on top facing right, one hook on bottom, facing left. p. Metal wire loop 3.7 cm long.

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