Bauhaus-Universität Weimar

Titel:
L. E. Knott Apparatus Company: Scientific Instruments, Catalogue 26
Person:
Knott, L. E.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit13684/53/
48 
L. E. KNOTT APPARATUS COMPANY 
No. 24-60 
No. 24-80 
24-60 PARALLELOGRAM OF FORCE TABLE, adjustable to 
horizontal or vertical position on 60 cm. rod, for use in 
determining laws of composition and resolution of 
forces. Constructed of metal throughout, and all parts 
massive in design to insure stability. The table is 
35 cm. in diameter, is turned smooth, graduated into 
degree divisions, and nickel-plated. The pulleys are of 
brass, mounted in frictionless bearings. The centering 
arrangement is simple in design, but effective in insur¬ 
ing accurate results. Complete with three pulleys, 
weights and weight hangers. Tripod supplied with 
leveling screws (not illustrated)....................$62.50 
24-61 -, on 100 cm. rod............................... 63.60 
24-80 COMPOSITION OF FORCE BOARD (See Millikan, 
Gale & Bishop, Exp. 11). Without balances, but with 
three pegs to fit the holes in the board.............. 4.00 
24-87 COMPOSITION OF FORCE BOARD, ordinary form for 
use on four balls. With four balls and four pegs to fit the 
holes in the board................................ 3.40 
24-95 WIRE PENTAGON (See National Physics Direction 
Sheets, Exp. M274)............................. .35 
A 
No. 25-10 
FORCE OF GRAVITATION 
Equilibrium — Stable, Unstable and Neutral 
No. 25-76 
25-10 CENTER OF GRAVITY BOARD for determining the center of gravity of an irregularly shaped board. 
Complete with handle and plumb bob...................................................... $1.75 
25-15 CENTER OF GRAVITY ARC for illustrating stable and unstable equilibrium. The balanced system 
is so designed that the center of gravity can be changed to demonstrate stable, unstable and neutral 
equilibrium. Complete with stand........................................................ 3.26 
25-20 CENTER OF GRAVITY SYSTEM for illustrating center of gravity. The rod has two holes — one at 
geometric center, the other at the center of gravity. Complete as illustrated..................... 1.40 
25-60 LOADED CYLINDER WHEEL for illustrating the center of gravity of a loaded wheel. Two holes are 
drilled in the wheel — one at the geometric center, and one off center. A weight is attached at one 
side so that its position can be adjusted to bring the center of gravity at the hole drilled off center. 
Complete with support................................................................... 2.95 
25-55 LOADED CYLINDER illustrating the tendency of a body to place its center of gravity as low as pos¬ 
sible. The cylinder is loaded eccentrically and if rolled along a horizontal surface, will come to rest on 
its loaded side............................................................................45 
25-60 WITCH, illustrating the tendency of a body to keep its center of gravity as low as possible — a short 
piece of pith at one end of which is a loaded hemispherical piece of metal........................18 
25-76 LEANING TOWER illustrating stability when a line drawn through the center of gravity comes within 
the base of support. Top and foot removable............................................... 3.25
        

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