Bauhaus-Universität Weimar

Titel:
New Apparatus at Special Prices
Person:
Biddle, James G. [Including Willyoung]
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit13658/3/
Quantity. 
Special 
No. 
Catalogue 
DESCRIPTION. No. 
Catalogue 
Price. 
2 
D14 
100,000 Ohms Resistance Box (Grade Bj 
B5246 
50 OO 
Subdivided in four coils of 10,000, 20,000, 30,000 
and 40,000 ohms. Guaranteed accurate within 
h of i % • 
3 
1)15 
Double Plug Key ; hard rubber base (Grade B) 
B5261 
6 25 
T 
Dr6 
Single Contact Key ; hard rubber base 
(Grade B)............ 
5 00 
t 
D17 
Double Contact Key ; hard rubber base 
(Grade B)........... 
8 00 
I 
D18 
Short Circuit Key; hard rubber base (Grade A) 
B5265 
0 50 
I 
Dt<5 
Rambert's Discharge Key ; hard rubber base 
(Grade B)........... 
B5268 
20 OO 
3 
D20 
Reversing Key ; hard rubber base (Grade B1 
B5270 
25 00 
3 
Dzt 
Kempe Discharge Key ; hard rubber base 
(Grade B)........... 
B52S5 
35 00 
s 
D22 
Material for Congress Standard Cell . . 
B5292 
4 50 
2 
D23 
Sechommeter............ 
B5315 
50 OO 
A modified form of the Ayrton and Perry Ap¬ 
paratus. May be driven by hand or motor. 
1 
D24 
Profs. Ayrton and Perry’s Variable Standard 
of Self Induction......... 
B5316 
112 50 
Reading direct in Milli-Henrys. Range from 
to 35 M. H. This instrument was made for 
an order but not shipped, because the wood rings 
did not keep their shape perfectly. The wood is 
now thoroughly seasoned and the warp, while 
noticeable, is not great. The instrument has been 
re-standardized and is guaranteed “good as new’ ’ 
in respect to accuracy and continued reliability. 
Well finished but slightly shopworn. 
I 
D25 
Standard Potentiometer Resistance . . . 
B5361 
20 OO 
r ohm, to carry o.t.5 to 1.3 amperes. 
3 
D26 
Incandescent ! .amp Rotator....... 
B5388 
30 OO 
For obtaining mean horizontal candle power. 
To be driven by motor. 
3 
D27 
Direct Reading Photometer Scale .... 
B5410 
10 00 
i 
D28 
High Potential Transformer....... 
B.5435 
75 00 
18 
D29 
Single Contact Key ; wood base..... 
B5700 
i 75 
4 
D30 
Mica Condenser............ 
B5713 
40 OO 
i microfarad capacity, in five sections. Accurate 
within 1% approximately. 
4 
D.fl 
Simple Detector Galvanometer..... 
B5715 
4 50 
5 
D32 
Reflecting Astactic Galvanometer . 
B5720 
9 OO 
7 
D33 
Simple Tangent Galvanometer...... 
B5724 
12 50 
2 
D34 
D’Arsonval Galvanometer........ 
12 50 
t 
D35 
Standard One Ohm Coil ; accurate within A 
of I %.............. 
B.5730 
3 50 
s 
D3fi 
Resistance Box............ 
B5732 
20 OO 
tti-5 ohms in ten coils of 0.5, 1, t, 2, 3, 4, 10, 
20, 30 and 40 ohms. Accurate within % of
        

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