The Leo Goodwin Institute for Cancer Research, Inc. (appellant) appeals from a decision of the Secretary of Commerce1 denying its application for duty-free entry of an electron microscope pursuant to item 851.60, Tariff Schedules of the United States2 under section 6 of the Educational, Scientific and Cultural Materials Importation Act of 1966.3 The basis for the denial was the finding that “[a]n instrument or apparatus of equivalent scientific value to the foreign article, for such purposes as this article is intended to be used, is being manufactured in the United States.” We affirm.
Appellant filed its first application for duty-free entry of a previously ordered electron microscope on October 2, 1972.4 The microscope, a
*116Philips EM-201, manufactured in Holland by Philips Electronics Instruments Company, was to be used in connection with investigations to be conducted on the nature of malignant diseases, as well as to train graduate and post-graduate students. The application asserted:
[T]here is no electron microscope currently manufactured in the United States which is capable of performing the same function as the Philips 201 instrument. * * * RCA no longer manufactures electron microscopes, and it is our understanding that * * * the Forgflo Corporation purchased the RCA designs, manufactured one or two instruments, but that these are no longer on the market.
Describing appellant’s efforts to ascertain the availability of a domestic instrument or apparatus of equivalent scientific value to the foreign articles, the application continued:
We have contacted Forgflo Corporation by telephone regarding the availability of an instrument and the delivery time and were informed that although the company intended to resume production of their electron microscope, neither a cost, delivery date or adequate description were available at this time. Based on information from American experts in the field of electron microscopy, the Forgflo Corporation is on the verge of bankruptcy and can be disregarded as a factor in the manufacture of electron optics.
A notice of the application was published in the Federal Register5 as required by the statute, and a letter, dated February 14, 1973, was thereafter received from Forgflo’s chief engineer in the electron microscope division, which provided in pertinent part:
I wish to assure you that Forgflo Corporation is currently engaged in the manufacture and sale of the EMU4 Series Transmission Electron Microscope and that we have been so engaged, on a continuous and uninterrupted basis, since July of 1969.
Evidencing its continued operations, Forgflo also submitted literature describing its EMU-4 electron microscope and copies of correspondence with potential customers bearing dates ranging from January 26, 1972 to January 9, 1973.
On March 30, 1973, after reviewing the application, the National Institute of Health’s Florence Agreement Committee, acting under delegation from the Secretary of Health, Education and Welfare, recommended that it be denied without prejudice to its resubmission because “[t]he description of the research or teaching is not given in adequate detail to establish pertinent characteristics for the article.” The Committee further commented that “[t]he domestic EMU-4C was being offered for sale when the article was ordered. The application does not clearly show this instrument to be inadequate for the research work or the teaching described.” On April 11, 1973, appellant’s application was denied without prejudice.
A second application for the same article was submitted on July 9, 1973. The application asserted, inter alia, “[t]he overriding considera*117tion for the Philips EM-201 is its relative simplicity of design and ease of operation on a daily basis.” The application further stated:
We have been informed that the company (Forgflo Corporation) is bankrupt but that the RCA Corporation will continue to service their instruments on a parts-available basis. Inasmuch as there are several Philips instruments in South Florida, prompt and economic service is available in comparison to servicing of the RCA EMU-4C.
Notification of the second application was thereafter published in the Federal Register,6 and the Florence Agreement Committee, again citing an insufficient description, recommended denial without prejudice. The Committee also noted, as it had previously, that domestic instruments, including the EMU-4C, had not been shown to be scientifically inadequate for the intended purpose. This second application was denied without prejudice on November 16, 1973.
A third and final application was filed on February 20, 1974, reciting ten factors, shown below in tabular form as they appear in the application, which were asserted to be necessary for the intended uses of the Philips instrument and which were further alleged to be lacking in the domestically manufactured unit.
As further justification for duty-free entry, the application asserted:
At the time that we ordered the Philips EM 201 (August 1972), there was only one domestic competitive electron microscope on the market, the EMU-4 formerly manufactured by RCA. * * *
* * * ;f:
* * * [The Forgflo Corporation] was unable to furnish either a guarantee of adequate service or any evidence that the RCA scope would be up-graded or further developed under their direction. Based on information from U. S. experts in electron microscopy, the Forgflo Corporation was on the verge of bankruptcy and any guarantee of their backing up the RCA unit were [sic] highly suspect.
Notification of the application was published in the Federal Register7 on April 12, 1974, and on May 24, 1974 the Florence Agreement Committee once again recommended its denial on the ground that “the description of the research or teaching does not establish a pertinent characteristic for the article that upholds duty-free entry.” The Committee further commented:
Anticipated service needs and other cost related items, or the wisdom of purchase decisions are not relevant to duty-free entry; nor is [sic] Laboratory Space size, photograph or other conveniences. The domestic EMU-4C has a tilt stage, other cameras are available and guarantees 5 Angstrom resolution.
Additionally, Forgflo’s treasurer submitted a letter dated August 9, 1974, which stated:
From the time the Scientific Instrument Division of RCA was acquired by Forgflo [in 1969] until the date of sale by Forgflo Corporation to Adam David Company (completed on May 17, 1974), the EMU-4 Electron Microscopes of various model types were continuously being marketed in the United States and abroad.
It was determined by the Secretary of Commerce, in a decision,8 dated August 30, 1974, denying appellant’s final application, that “[a]n instrument or apparatus of equivalent scientific value to the foreign article, for such purposes as this article is intended to be used, is being manufactured in the United States.” The Secretary, relying on the Florence Agreement Committee’s recommendation, further commented:
*119The Department of Health, Education and Welfare (HEW) reviewed this application and compared the alleged pertinent features of the article with those of the most closely comparable domestic electron microscope, the Model EMU-4C, formerly manufactured by Forgflo and now supplied by the Adam David Company. HEW advised in its Memorandum dated May 24, 1974, that the cameras and 5 Angstroms resolution features (8) and (9), are available in the EMU-4C and that features (1) through (7), above, are convenience features, none of which constitutes a “pertinent specification” within the meaning of Section 701.2(n) of the regulations. Feature (10) was not ordered with the article and therefore cannot be considered in the determination of scientific equivalency according to Section 701.2(d) and 701.6(a)(3) of the regulations.
Appellant has appealed from this decision.
This court has jurisdiction on appeal, as specified in 28 USC1544, to review the findings of the Secretary of Commerce relating to the importation of scientific instruments or apparatus. The scope of our review is limited to “questions of law only,” and this language has been construed to mean that review “is limited to determining whether the administrative decision is supported by substantial evidence.” Varian Associates v. United States, 56 CCPA 54, 57 (1969).
Appellant asserts in this appeal that the Secretary erred as a matter of law in failing to consider normal commercial practices applicable to the production and delivery of instruments or apparatus of the same general category as the domestically manufactured EMU-4C, as required by Chapter VII, Section 701.11(b) of the Rules and Regulations of the Office of Import Programs, Department of Commerce, 15 C.F.R. 701.11(b).9
Forgflo’s financial circumstances, appellant contends, made it impossible for the company to furnish an adequate guarantee of service for its instrument. The Government’s position is that the only “normal commercial practices” that the Secretary of Commerce is bound to consider are those which pertain to “production and delivery,” not to “financial stability and reliability of service requirements.”10 Whether, as a matter of law, the availability of servicing bears on the issue of the scientific equivalency of the apparatus or whether it is simply a com*120mercial consideration which need not be considered, it is clear, at least to the majority, that servicing was available for Forgflo’s products at the time of appellant’s purchase of the Philips EM 201. Substantial evidence supportive of the Government’s position appears in the record in the form of a letter, dated December 10, 1973, from J. J. Asti of the RCA Service Company, the authenticity of which has not been challenged. This letter states:
Statements made by individuals or organizations which in effect imply RCA Service Company no longer is interested in Electron Microscope service, are totally unfounded.
RCA Service Company will provide service and parts to any individual or organization in the U.S.A. and Hawaii. We know of no instance where service has been refused to anyone, with the exception of credit suspensions for failure to pay invoices due. [Emphasis added.]
In view of the emphasized last sentence of this letter which has gone uncontradicted by any evidence submitted by appellant, we think the date of this letter, which is more than a year after appellant ordered the Philips instrument, does not render it any less effective as “substantial evidence” that servicing was available during the relevant time period.
We note further that the applicable regulations specifically exclude from the Secretary’s consideration, for instance, “such characteristics [of the instrument] as size, durability, complexity, ease of operation, ease of maintenance and versatility, unless the applicant can demonstrate that they are necessary for accomplishing the purposes for which the article is intended to be used.” Section 701.2(n). Also specifically excluded is difference in cost between the domestic and foreign instrument. Section 701.2(n).
We are also convinced that substantial evidence supports the Secretary’s factual determinations that the EMIN4C was being manufactured in the United States when appellant purchased the foreign microscope and that the EMU-4C is of equivalent scientific value to the domestic instrument for such purposes as the instrument was intended to be used.11
Forgflo’s letter of record dated February 14, 1973, confirming an earlier telephone conversation, clearly states that it was then currently engaged in the manufacture and sale of the EMU-4C and that it had been “so engaged, on a continuous and uninterrupted basis, since July of 1969.” Evidencing its continuing operations were correspondence with potential customers during the relevant periods of time and some technical literature which describes the EMU-4C electron microscope. Appellant asserts, however, “that the Forgflo Corporation was not a *121viable company at and immediately prior to the time (August 17, 1972) the appellant negotiated a purchase of the Philips EM-201 electron microscope,” citing, inter alia, the Tariff Commission’s Report to the President of the United States.12
Our review of the Commission’s report, however, leads us to a different conclusion. The report states that Forgflo’s sales of the EMU-4C were disappointing, resulting in its inability to complete development of its new “Paragon” model, a prototype of which had been made in October 1970. The report provides no indication of whether the older EMU-4C model was being manufactured in the United States by Forgflo during the summer of 1972, but indicates that Forgflo did have an existing inventory of EMU-4C electron microscopes, out of which appellant’s order could presumably have been filled. Neither thfs nor any of appellant’s other evidence contradicts the statement of Forgflo’s chief engineer that Forgflo was engaged in the manufacture of the EMU-4C during the relevant time period. The logic of appellant’s further allegation that Forgflo was “not actively manufacturing parts and could not therefore have been manufacturing completed units during the summer of 1972 completely escapes us. Certainly, the fact that a domestic manufacturer of an article is assembling completed units from parts in its inventory, which it has previously manufactured or purchased elsewhere, should be sufficient to support the conclusion of the Secretary of Commerce that an instrument of equivalent scientific value was being manufactured in the United States during the relevant time period.
The Secretary’s finding of scientific equivalency, which relied on the report of NIH’s Florence Agreement Committee, is also amply supported by the record. The features sought to be relied upon were not considered by the Secretary in the abstract. Rather, they were considered in connection with the purposes for which the article was intended to be used. This was a judgmental determination made on the basis of a report from a committee with a particular expertise in the field, and the Secretary correctly considered this advice along with the rest of the evidence.
Accordingly, the decision of the Secretary of Commerce denying appellant’s application for duty-free entry is affirmed.