A.
The Victoreen-247 ion chamber meter has four scale readings,
2.5mr per hour full scale, 1X, 10 X, 100 X, and 1000 X.
It
was desired to obtain 10 instruments modified to have five
seale ranges, @.5mr per hour full scale,
1000 X, and 10,000 X.
1 X, 10 X, 100 X,
The instrument company did not consider
this practical in accordance with their current production design so a four-scale instrument reading 10 X, 100 X, 1000 X,
and 10,000 X was agreed upon.
B.
The Rauland Corporation instrument is a portable alpha, beta,
gamma meter.
It was the subcommittee'’s recommendation that
this instrument be modified to gamma reading only.
It was fur-
ther recommended that the instrument be placed in s metal case.
These modifications, especially removal of the alpha-beta fea-
ture, would simplify the instrument and perhaps effect a reduction in price.
As a result of these specifications the Model 247-A (modified) manufactured by the Victoreen Instrument Company, Model MX-6 manufactured by
the National Technical Laboratories, and the modified Zeus manufactured
by the Rauland Corporation, were constructed specially for this operation.
High range vocket dosimeters (10r and 50r) were constructed specially
for this operation by the Kelly-Koett Company and the A. 0. Beckman Co.
Standard range dosimeters (0-.2r) were obtained from the Cambridge
Instrument Company which manufactured them primarily as a result of
stimulation by the subcommittee.
A serious bottle-neck developed with resvect to Landsverk electrometers.
This resulted from indecision on the part of Landsverk as to whether to
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