The opinion of the Court was delivered by

The plaintiff, a machinist in the employ of the defendant company, was injured while operating an iron planer so as to require amputation of the left hand, and brought this action for damages, which resulted in a verdict and judgment for defendant. The .manner of the injury and the failure of duty on the part of the defendant is thus alleged in the complaint:

“On April 1, 1903, while engaged in the line of his duty planing down a "piece of iron to be used on a beeder cover in defendant’s mill, it became necessary for him to bolt said piece of iron tightly to the bed of the planer by screwing down a clamp bolt attached to the planer for that purpose. And the plaintiff further alleges in order to accomplish, fastening said piece of iron securely, he placed a wrench used for that purpose upon the clamp bolt and proceeded to1 screw down said bolt, and while in this position with his left hand upon said wrench, because of the negligence and carelessness of the defendant and its servants in failing to repair and properly construct said planer and the appliances therewith connected, and to keep the same in a safe condition for its employees as was its duty to do, the counter-shaft which derived the power to run said planer from the main mill shafting, by means of belting, became out of alignment with the said mill shafting and while the plaintiff w.as in the position above described, without any fault on his part, and without his knowledge and without warning, because of the negligence and carelessness of the defendant aforesaid, the belt running from the mill shafting to the loose pulley on the counter-shaft automatically shifted on to the fixed pulley thereon, thereby starting the planer in motion, causing the bed of the same to move forward quickly and catch the wrist of the plaintiff’s left arm between the nut on the clamp bolt and the cross beam on the planer and to crush and lacerate his arm to such an extent and manner as to cause a total loss of his left hand.”

*234 It will be observed that the particular act of negligence alleged was the failure of the defendant 'to have the counter-shaft properly aligned with the main shaft, thereby causing the belt to shift automatically from the loose pulley to the tight pulley on the counter-shaft and so put the machine in motion. This prepares us to consider plaintiff’s fifth except tion, as follows:

1 “Because his Honor erred in refusing to allow the plaintiff to answer the questions hereinafter complained of, as follows: ‘Q. Have you ever worked in any other mill besides the Langley Mill? A. Yes, in the Sibley Mills, King Mill, Enterprise Mill, Georgia Iron Works. Q. Have you seen these shifting rods used in these mills for shifting a belt from' the loose to a tight pulley and vice versa f It is submitted that what other well regulated mills, under like circumstances, do, is, competent evidence bearing on the question of what is ordinary and reasonable care, and that the same should have been allowed to go to1 the jury along with the other evidence and that his Honor erred in refusing to allow the plaintiff to answer such questions.”

While the practice of other well regulated companies in the same business is not a conclusive test, yet such practice may be given in evidence on the question whether there was negligence in the particular alleged. Lowrimore v. Palmer Manufacturing Co., 60 S. C., 168, 38 S. E., 430; Bodie v. Railway, 61 S. C., 488, 39 S. E., 115. But the difficulty in appellant’s way is that the complaint did not allege negligence with respect to the shifting rods, but alleged a faulty alignment between the main and counter-shafts as the cause of the injury. Hence, the testimony proposed was irrelevant to the issue in the case and was properly excluded.

2 The sixth exception complains of error in the Court’s ruling excluding the testimony of the witness M. E. Berry, as shown in this extract from the case: “Q. Have you ev er had any experience with machinery? A. I have had with cotton gins and that kind of machinery. Q. Have you, ever had any experience with pulleys and *235 belting? A. Yes, I have set up those machines and run them. Q. From’ your experience in the mill business, if a belting running on a loose pulley automatically shifts from the loose pulley on to a tight pulley, in your mind what would that indicate?

“Mr. Henderson: We object. That is not a matter of science, it is a matter of common sense for the jury to ascertain.

“The Court: My view of it is that it is a matter of common know,ledge. It seems to me a man with ordinary common sense ought to know that if it shifts that way it is not proper. It is more a matter of common knowledge and experience ”

It is contended that the testimony was competent as the opinion of an expert. This Court will not reverse the judgment of the Circuit Court for excluding expert testimony unless it is convinced that the error, if any, was harmful. It is for the trial Court to decide whether the question under inquiry is one upon which expert opinion is proper and whether the witness has the necessary qualifications. 2 Elliott Ev., sec. 103'6. The trial Court’s conclusion on these matters will not be disturbed except in a case of abuse of discretion, which we do not find in this case. “Opinion evidence is. based on necessity and is not admissible as a general rule when the facts can be reproduced before the jury in such a way as to show the condition of things upon which the opinion of the witness was based.” Easler v. Ry. Co., 59 S. C., 311, 315, 39 S. E., 938. It is a cardinal rule that the evidence must be of such a character as not to fall within the rangé of common experience and observation, and, therefore, not to be intelligible to jurors without the aid of opinion. 12 Ency. Law, 458, and cases cited.

The plaintiff was fortunate in securing from the trial Judge an opinion such as he desired from’ the witness, and doubtless it went to the jury with more force than if given by the witness.

*236 The foregoing are the only exceptions that were argued by appellant, and the Court does not feel impelled to consider what counsel do not deem1 of sufficient importance to discuss.

The judgment of the Circuit Court is affirmed.