RWD Stereotaxic Instruments

An automated, software-controlled frame with 1 μm accuracy. Built-in rat and mouse brain atlases show where the probe is in real time, and automated programs handle skull windows, tissue removal and injections. Anti-collision protection stops wrong movements before they reach the animal.

• High-precision stepper motor: minimum displacement 0.33 μm
• Anti-backlash compensation and user frame calibration
• No leveling needed: four skull points set the tilt, and the atlas scales to the actual skull
• Constant speed: 5 speeds on AP/ML, 9 on DV, down to 1 μm/s
• Optional dual manipulators for bilateral targets in the same animal

The classic U-frame, in lab use for 20 years. 100 μm displacement accuracy; swap adaptors and ear bars to work with different small animals.

• Working distance 80 mm, 100 μm reading accuracy
• Wide Y-axis range, spacing up to 28 mm
• Double-lead screws for smoother, more accurate motion
• Separate vertical lock and positioning buttons keep the arm at exactly 90°
• Extended base plate 400 × 255 mm; U-frame opening 115 mm; ear bar tip to base 51 mm
• Upgradeable to digital (10 μm) or dual manipulators (add 68402)

MRI Large Animal Stereotaxic Base (68915)

An all-plastic, MRI-compatible base for fixing the heads of 10–30 kg animals during MRI. Target brain regions from the scan, then position with a manipulator (sold separately; the manipulator is not MRI-compatible).

• Base plate 420 × 200 mm; rails 19 × 19 mm, 325 mm long, 178.5 mm apart
• Rail scale ±100 mm, 1 mm accuracy
• Upper jaw plate: 80 mm front-back, 35 mm up-down; eye bar: 95 mm front-back

Spinal cord adaptors

• 68091 Rat and Mouse Spinal Cord Adaptor, up to 500 g; three clamps, 56 mm vertical travel
• 68094 Mouse Spinal Cord Adaptor, 20–30 g
• 68095 Rat Spinal Cord Adaptor, 200–300 g

For 68041 and 68081, please send the animal's head width, nose-to-eye distance and mouth width before ordering so we can confirm fit with RWD.

Ear bars

• 68306 Mouse 60° Ear Bars, obtuse tip to protect the skull
• 68307 Mouse Serrated Ear Bars (hollow, large contact area)
• 68308 Mouse O-shaped Ear Bars (rubber ring contact)
• 68314 Mouse Height-Adjustable Serrated Ear Bars, −5 to +5 mm
• 68301 / 68302 Rat 18° / 45° Ear Bars, 0.8 mm tip radius
• 68305 Rat 45° Hollow Ear Bars for auditory stimulation
• 68303 / 68304 Cat/Monkey 18° / 45° Ear Bars
• 68413 Elevated Ear Bars, raise the head 50 mm

Holders

Every holder connects with the included 68207 V-attachment (8 mm rod) and also fits standard stereotaxic frames from other major brands. Pick by the diameter of what you need to clamp.

• 68201 Standard Probe Holder, Corner: 0.3–1.5 mm
• 68213 Standard Probe Holder, Side: 0.4–4.0 mm
• 68210 / 68211 Electrode Holders: 0.7–2.5 / 2.1–5.0 mm
• 68216 Electrode Holder: 0.4–1.5 mm (dual tips to 0.2 mm apart)
• 68214 / 68215 Ceramic Ferrule Holders: 1.25 / 2.5 mm, for optogenetics
• 68205 / 68230 / 68217 / 68221 Cannula Holders
• 68202 / 68206 General Probe Holders: 6–12 / 3–12 mm
• 68218 Syringe Holder; 68606 Manual Syringe Pump (1–1000 μL)
• 68605 Microdrill Holder; 68106 Headstage Holder (0.1–7.0 mm)