Equipment information:

Simpson 305 Valve characteristic meter
Model: 305
Date: 1954
Category: Measurement instruments
Group: Valve characteristic meter
Description: Tube Tester
                                    There are several types of tube-testers for the serviceman.
Simpson manufactures all different accepted types. Among
these, the Simpson Models 305 and 305RC are the most modest
in price. But this does not mean that they are limited in
performance of necessary functions. Such instruments are
simply not produced by Simpson, because Simpson does not
manufacture to sell at a price. First consideration is the
design of an instrument that will do a thorough job.
Simpson Models 305 and 305RC are designed to provide
accurate testing for all tubes with filament voltages from
.5 volts to and including 120 volts. It tests loctals,
single ended tubes, bantams, midgets, miniatures, ballast
tubes, gaseous rectifiers, acorn tubes, Christmas tree
bulbs, and all popular radio receiver tubes.
Like other Simpson tube-testers, the 305's incorporate 3-way
switching which makes it possible to test any tube
regardless of its base connections or the internal
connections of its elements. This method, the result of
exhaustive research and expensive construction, protects the
Model 305's against obsolesence. No adapters or special
sockets are required. In addition to having a complete set
of sockets for every tube now on the market, this tester has
a spare socket, to provide for future tube developments.
On the Model 305RC, the "No-Backlash" Roll Chart prevents
the chart from being torn or from getting out of alignment
by automatically keeping chart in constant tension. This
gives precision selection at all times. If you will remove
the Roll Chart unit you will see the very superior Simpson
construction throughout. It is, beyond question, the finest
roll chart mechanism, in design and in quality manufacture,
on any tube tester today.

These manuals are available for the above equipment:

Simpson -- 305 -- User Manual
File name: Simpson-6428-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 26
Size: 1.34 Mbytes (1400850 Bytes)
Language: english
Date: 1954
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: c5357af7d3e9ec4538e966abb32469b3
ed2kID: 221ae9a7479190faf436635283b215a8
Downloads: 188 since 22 November 2014
Start Free Download

Simpson -- 305 -- User Manual
File name: Simpson-6442-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 26
Size: 1.34 Mbytes (1410179 Bytes)
Language: english
Date: 1954
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: ff661b6f064bf22de375411176bc8f6c
ed2kID: 3af49a7d03234b77b8b8288d3e750fc1
Downloads: 130 since 23 November 2014
Start Free Download


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