Single manipulator models read from the open end of the U. Large, easy-to-read numerals on scale. Precise alignment to 0.1mm resolution. Triple-start lead screws for fastest positioning possible. Absolute lock at 90°. Universal joint allows scientist to probe in either anterior-posterior or lateral-medial planes. Manipulator. Arm may be swiveled out of the way for convenience in installing animal, or for performing a procedure, and then reliably returned to the same point. Available with 18° or 45° (non-puncture ear bars). Braintree避难所小屋II 一个舒适，安静的地方休息，或爬上去探索。切碎的材料（只是为了娱乐或筑巢），通常需要7至30天。直径4英寸x高2英寸，带有3个大窗户和更宽的门，可提供更安全的出入口。较大的孔还使工作人员可以轻松地将垃圾放在庇护所内，以观察它们。