The plaintiff had rescinded his purchase of a half interest of said property and had sued and recovered judgment against his vendor for the amount paid for the property. He was unable to collect his judgment, except a small portion thereof. For the purpose of showing that he had been unable to collect the judgment and that execution had been issued on said judgment he offered in evidence a judgment against his vendor. The court refused to admit the certified copy of the judgment against his vendor *176 but permitted tbe plaintiff to testify as to the amount of the judgment and the amount that had been paid on it. The fact plaintiff desired to prove was not denied by the defendants. It was not error, therefore, to sustain an objection to the admission of the judgment-roll. The judgment was not involved in the instant litigation. There was no issue about the amount of the judgment.

For the purpose of proving the amount of plaintiff’s damages he testified to the daily receipts of the business during the short time he was in charge thereof. One of the particulars in which the statements appearing in the advertisement was false was that the receipts were $10Q per day. Plaintiff testified that the receipts were about $10 a day and the expenses $20 per day. The court permitted the plaintiff to testify fully and in detail regarding the daily receipts. Plaintiff complains because the court did not allow him over the objection of the defendants to introduce his books in which he kept an account of said receipts and expenditures: Section 859, Of. L. We do not believe the court erred in that ruling. The exact amount of the receipts and expenditures was immaterial. The items of the account were not involved. The plaintiff desired to use the books to refresh his memory “as to the exact daily receipts and expenses of said business from his books.” He alleged in his complaint that the receipts did not exceed $10 per day and that the expenses were $20. He was able to testify in support of his complaint without reference to any memorandum. . .,, ,

“A witness having an independent recollection of a fact is not permitted to produce a memorandum, such a paper being used only for the purpose of refreshing his recollection. ” Hall v. Brown, 102 Or. *177 389, 393 (202 Pac. 719, 720); Friendly v. Lee, 20 Or. 205 (25 Pac. 396).

The particular items making up the receipts and expenses were immaterial to the issues joined in this action.

The plaintiff complains that the first finding of fact quoted above is outside of the issues and is therefore a nullity. If we concede that the finding is a nullity then it is harmless. It is a rule of law that a person seeking damages on account of fraud by reason of misrepresentation made to him whereby he was induced to buy property must use reasonable care for his own protection and should not rely blindly on statements made by the seller: McCabe v. Kelleher, 90 Or. 45 (175 Pac. 608); Reimers v. Brennan, 84 Or. 53 (164 Pac. 552). The defendants alleged as an affirmative defense that the plaintiff called at their office and expressed a desire to purchase the property. Thereupon defendant Morris accompanied him to the property, introduced him to Leslie A. Jones, the owner, and that thereafter the negotiations for the sale of said property by said Jones and purchase thereof by plaintiff were conducted between them. The testimony in behalf of the defendants supports this allegation. The defendant Morris testified that he told plaintiff in effect that all the information he had about the business was what the owner, Jones, had told him, and that Jones and the plaintiff carried on all of the subsequent negotiations which led to the purchase by the plaintiff. The finding No. 1 was therefore appropriate, responsive to the evidence and within the pleadings.

Plaintiff contends that finding No. 2 is amere conclusion of law, is a negative pregnant and is not sufficient finding of fact upon which to base a conclu *178 sion of law. We cannot concur in plaintiff’s opinion. Fraud is a question of fact: Clough v. Dawson, 69 Or. 53, 59 (133 Pac. 345, 138 Pac. 233); Porter v. O’Donovan, 65 Or. 9 (130 Pac. 393). Finding No. 2 is therefore a finding of fact and is not merely a conclusion of law. Fraud is often a mixed question of law and fact. But in the instant case the alleged fraud is entirely one of fact. The court is not required to set out in its finding of fact the evidence upon which it relies. All that is required is the ultimate fact which the court finds from the evidence.

“When, in an action tried without a jury, the court finds on an issue that ultimately determines and necessarily supports the judgment rendered, other issues in the case become immaterial, and a failure to find thereon does not constitute prejudicial error.”

Lewis v. First Nat. Bank, 46 Or. 182, 188 (78 Pac. 990, 992); Turner v. Cyrus, 91 Or. 462, 467 (179 Pac. 279); Columbia Realty Investment Co. v. Alameda Land Co., 87 Or. 277, 291 (168 Pac. 64, 440).

“If findings support the judgment and conform to the theory of the prevailing party, they are sufficient.” Freeman v. Trummer, 50 Or. 287, 290 (91 Pac. 1077, 1078).

The plaintiff has no just ground for complaint because of the form of finding No. 2. His contention as we understand it is that the use of the language “as alleged in plaintiff’s complaint” constitutes a negative pregnant. It is elementary that the findings are limited by the issue framed by the pleading. Plaintiff could not recover for any fraud other than that alleged in his complaint: Ford v. Schall, 110 Or. 21, 26 et seq. (221 Pac. 1052, 222 Pac. 1094).

The only issue framed by the pleadings was the fraud. The findings therefore correspond to and cover *179 the entire issue joined in the trial. These findings are sufficient to support the judgment and there was evidence to support the findings. It is not the duty of this court to weigh the testimony but only to determine whether or not there was any material evidence to support the findings. The judgment is affirmed.

Affirmed.