The relator made application for a peremptory writ of mandamus requiring the commissioner of water supply, gas and electricity to test at the pipe yards, pursuant to rule 13 of the department, a. “Standard Current Water Meter” manufactured by the relator Which had been ordered by a customer and, if said water meter should pass a satisfactory test, to permit the same to be installed on premises ■ at Third avenue. The commissioner, from information received by him from the chief engineer and assistants in the department, and from personal investigation made, believed that the current water meter.of the relator is not a proper meter to measure water furnished by the city to its customers and refused to test the meter in question and refused to permit it to be installed.
It would appear that the relator is a manufacturer of two kinds of water meters, one designated the “Standard Disc Water Meter” and the. other the “ Standard Current Water Meter,” The latter,; it. is claimed, is' adapted to measuring hot water, which office, as alleged, could not be performed by any disc meter manufactured.
*243The relator applied to the respondent’s predecessor in office for his approval of the meters manufactured by it, to the end that it might apply to the board of aldermen to obtain the approval of that body pursuant to the provisions of section 475 of the Greater New York charter (Laws of 1901, chap. 466), which vests it with power to approve of the pattern and price of such water meters as were intended to be used within the city. The then commissioner, after testing the meters, sent to the board of aldermen a report of the tests that were made and which, on the whole, were favorable; but, as the result of subsequent tests made, a further communication was sent to it unfavorable to the current meter. The board adopted a resolution as follows: “ Resolved, That upon the recommendation of the commissioner of water supply, gas and electricity, the pattern and price of water meters manufactured by the Standard Water Meter Company of this city is hereby approved for use in the city of New York.”
A dispute lias arisen over the form of this resolution as to whether it was intended to include both the disc and the current meters, the relator contending (and in this being corroborated by some of the aldermen) that it referred to both kinds of meters ; while the commissioner insists that the resolution was not intended to include the current water meter, but, through inadvertence, the resolution was adopted approving in general terms instead of specifically designat-' ing the standard disc meter. In view of the conclusion which we have reached, and for reasons which may be briefly stated, it is at present unnecessary to decide this question as to the scope and intent of the resolution.
It appears that after this proceeding was commenced, the commissioner communicated with the relator stating that if the company would send to the pipe yards two specimens of their current water meters he would, within six weeks, make thorough tests, and if the tests were satisfactory and reached the standard requirements of the department, he would permit the installation of this particular style of meters, subject to individual tests of meters before use, under the regulation of the department. This proposition was accepted by the relator and this proceeding was adjourned and ten current meters of the relator were thereafter sent to the pipe yard, but as the result of the tests made, the foreman reported “ that the said current water *244meters are unreliable and will not stand the test for endurance and are absolutely unfit for use for measuring water furnished to consumers by the City.”
As the result of these tests and report the commissioner concluded that “the current water meters on account of their unreliability are not fitted for ” the intended use. And he informs us that “ no current meter, either of the Standard Water Meter Company (the relator) or any other make, is used in this city to measure water furnished 'by the city to its consumers.” There is no suggestion in the relator’s papers that the current meter which it now wants tested is any better or different in principle or kind than those heretofore tested, and it is not claimed that with respect to such current meter a new test would result differently or alter the conclusion already arrived at by the commissioner as to the unreliability of current meters. To show the commissioner’s attitude we can best quote his own language as follows: “ Deponent says that he is willing to test any current water meters of the i'elator, * * * if a reasonable time be allowed for the purpose of putting such current water meters through a substantial test, but that as for making a short test of said current water meters in view of the reports already referred to * * * showing that the current water meters are unfit for use, it is submitted that it would be idle to make any more short tests of that nature.”
There having been, therefore, a fair testing of current meters,. unless the relator would take advantage of the offer made of putting some of them again through a more substantial test, it would, as suggested by the commissioner, be idle to compel him to go on indefinitely, in view of the conclusion already reached as to their unreliability, under short tests of individual or particular meters. To succeed, therefore, the attitude of the relator must necessarily be that, under the law, the commissioner, after meters have been approved as to pattern and price by the board of aldermen, has- no discretion except to go on when requested and. test and approve them. We say advisedly “test and approve” because if the commissioner has any discretion after testing to reject, and disapprove, it is quite evident that, after the tests -already made, he is opposed to approving -current meters of any make because he has found them to be inadequate and unreliable.
*245We do not think that upon any fair construction of the language of section 475 of the revised Greater New York charter this attitude or position of the relator can be sustained. It is therein provided that “ the commissioner of water supply is authorized in his discretion to cause water-meters, the pattern and price of which shall be approved by the board of aldermen, to be placed in all stores, * * * and if authorized thereto by resolution or ordinance of the board of aldermen in all apartment houses,” etc. The effect of this law is to vest in the board of aldermen the power to select the pattern and price of all meters which are to be used in the city, and it is within the discretion of the commissioner to determine, subject to the limitation expressed in the section, in what places such meters shall be located. Pursuant to rule 13 of the department of water supply, gas and electricity — which department is given the power to make such rules (Revised Charter, § 469) it is provided that “ all meters before being placed must be sent * * * to the department pipe yards to be tested.”
Taking together, therefore, the section of the charter and the rule, we find that, after approval of the pattern and price of meters by the board of aldermen, it is still necessary that they should stand the test to which they are required to be subjected by the department" before being placed in the building or on the premises wdiere the commissioner in his discretion directs that they shall be located. There can be no doubt but that with respect to meters the pattern and price of which have received the approval of the board of aldermen, it becomes the duty of the commissioner upon request to test them; and where, generally, they are suitable for the purpose, the commissioner could not refuse to test a particular or individual meter, and this notwithstanding that he might have found at times that other and different meters of the same kind were defective. Of course with respect to individual meters the discretion is still vested in the commissioner to reject them if, after a test, they are found to be defective or unsuitable. Where, however, the test has been applied to all of the meters of a particular kind, and thereafter the objection of the commissioner is directed to the principle upon which the meters are constructed, and from the test he has concluded that one and all of them are unsuitable and unreliable, it would be a useless and an idle ceremony to compel him to go on indefinitely *246making individual tests, merely for the purpose of reaching the same conclusion and rejecting the meters.
There being nothing to show, therefore, that the individual current meter which was here presented for testing in any way-differed in principle, in pattern or in kind from those already tested ■ and rejected by the commissioner, it was .unnecessary -and useless for him to make such additional tests as were requested; nor do we think that the court would be jhstified in compelling him to do that which would result in nothing else but consuming the time of the commissioner and those in his oíBee to whom the detail Work would be confided. Had it been shown that the current meter here in question was an improvement in principle, or in kind, or different in any way from those formerly presented, or that the commissioner arbitrarily or in bad faith refused to make the test, an entirely different question would arise; In the absence of such, a showing, however, and in view- of the attitude of the commissioner which, from the tests made of current meters, seems fair and reasonable, we would not be justified in requiring him to test this particular current meter; and in no event would we have the power to compel the commissioner to allow the installation of the meter offered.
It may be suggested that this construction of the discretion vested in the commissioner would negative and destroy the power vested in the board of aldermen to approve of the pattern of meters; and in this instance it no doubt follows that the conclusion of the commissioner will be to prevent the use of the current meters of the relator in the city. Notwithstanding this, however, we think that where, as here, discretion is vested in the commissioner, after testing and finding a meter unsuitable, to refuse to permit it to be installed, the discretion thus vested in him to reject one, gives him the right to reject all, if it appears, as in this case, that the vice or fault shown by testing exists in all, and that the reasons which -demand the rejection of one meter equally apply to all.
We think that the order appealed from was right and should be affirmed, with costs.
Patterson, Ingraham, Hatch and Laughlin, JJ., concurred.