ADJUSTABLE Spanner Wrench / LENS OPENING TOOL (6 BIT SET) PART# SWM3B

" NEW"

PREVENTS YOUR LENS FROM DAMAGE / SCRATCH DURING REPAIR

• 1. ALL ALUMINIUM LOCKING KNOBS
• 2. HIGH TENSILE STEEL HEX BAR AND SET OF ADJUSTABLE ARMS
• 3. EASY TO ASSEMBLE WRENCH FITS MOST RETAINING RINGS

  Opening range of the bits:

• # Pointed bit : 108mm
• # Wide bit     : 110mm
• # Slotted bit : 108mm

An optical spanner is used to take apart and assemble lenses, shutter retainers and any number of other mechanisms using  threaded ring fastener.

There are many styles of fastener used in optical assembly.  Some rings use plain drilled holes instead of slots; the round tipped version is used for these.

Opened to its standard maximum the tips can span over 110mm. Greater length is easily acheived by using a longer trammel bar. Any 1/4" square stock can be used.

At the minimum the tips can be closed to no space at all so the tool is suitable for small rings.

 The robust steel construction has large sized knobs to tighten securely on the trammel bar. They can be hand tightened or snugged down with a wrench.Although rigid and stiff in normal hand use, for stubborn cases the entire tool can be clamped into a vise so that maximum torque can be applied. Its amazing how tight some of these rings can be.

• The round tips are pencil like in size and taper smoothly.
• The tips can also be closed down for small rings. The round tips are about 1mm in diameter.

  The flat tips are slightly thicker than 1mm.

  The flat tips are about 3mm wide. They can be easily thinned, narrowed or sharpened with an ordinary file or grinder.

  The legs slide along a square trammel bar and lock securely with knobbed screws.