(372) 
Prof. Schermerhorn states in his published remarks on this proposal that 
all European equipment manufacturers use grid plates in making a final in- 
strument check and that the test procedures used now by the European 
equipment manufacturers resemble the proposed standard test. Prof. Schermer- 
horn suggests certain extensions of the test which ‘I believe are desirable, 
however, I should like to point out that the test as outlined will give the result 
obtainable by some of his Proposed extensions. In other words, some of these 
extensions are outlined in the Proposed test although a step by step detail 
procedure is not given, for instance, the recommendation for grid measurement 
at different heights and different base-height ratios. The proposed test calls 
for measurements with both base-in and base-out settings where applicable and 
at optimum of maximum and minimum instrument scales as applicable. Also 
the proposed test calls for the base-height ratio of the test to match the base- 
height ratio in operational use. 
Contrary to Prof. Schermerhorn's indication, I do not contend that the 
introduction of extensions will make the test useles, but I do believe that 
special purpose tests should not be included. Monocular measurement of grids 
are necessary to determine the source of error in an instrument and make 
Second Session on September 6th. 
At 3.20 P.M. the president, Mr. Poivilliers opened the session by present- 
ing, on the subject of the Pennington Project, a proposal offered by the French 
Delegation for organization of international competition. 
The text of this proposal is the following: 
Procedures of standardization of methods of comparison and adjustment 
of plotting apparatus which have been discussed, have for their purpose the 
determination in an impartial fashion the quality of the various plotting ma- 
chines. Finally, to make the comparison of the machines most easy and most 
impartial, an identical test has been proposed for all. 
The use of these methods of quality control, which have a tendency to 
become the methods of comparison and classification of the apparatus, would 
be an employment very delicate and perhaps dangerous. Also they do not 
take account of the peculiarities of the machines which have the result of in- 
creasing their production, of diminishing their net cost, of facilitating their use 
by the personnel, etc. 
If one would compare and classify the apparatus, why not do so by solving 
certain concrete problems, so as to judge all the apparatus and the methods of 
working in view of which they have been constructed. 
Automobile races have contributed powerfully to the development of that 
industry. In these races automobilists are required to demonstrate practically 
all their qualities (whether speed, endurance, economy, or all these qualities 
together in accomplishing various applications. 
The French delegation therefore proposes “T'he establishment of internati- 
onal photogrammetric competitions concerning certain problems, surveys of 
large scale, medium scale, small scale, bridging aerial triangulation, etc.". The 
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