Thorlabs Optic Table and Legs 72″ x 30″ x 8″
28″ Pneumatic Legs
PTM11101
SN 1020140
1/4 – 20 ; 1″ O.C.
PTM11101 — Key Specs
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Name / Part: Thorlabs PTM11101 — Standard Series Optical Table — 6′ × 2.5′ × 8.3″
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Dimensions: 6 feet by 2.5 feet, thickness 8.3 in (≈ 210 mm)
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Weight: ~ 381 lbs (≈ 173 kg)
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Flatness: ± 0.1 mm (± 0.004 in) over any 1 m² region
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Construction: Double-plated, single honeycomb core; top & bottom matched materials (for thermal stability); magnetic stainless steel plates (5 mm thick), top plate brush-finished; sides are black laminated steel slightly inset.
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Mounting Holes: Pattern is ¼-20 on 1″ centers (imperial) / M6 on 25 mm centers (metric) depending on version. Hole spacing (edge to first hole center) is given.
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Price (historical / when it was active): US$ 2,125.00
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Discontinued: Yes, this model was discontinued as of May 30, 2013.
Implications & Considerations
Since it’s discontinued:
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You probably can’t order it new from Thorlabs, so you’ll need to look on secondary markets or find a current equivalent.
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Specs were fairly mid-range: the 8.3″ thick standard table offers good stiffness; the flatness spec ±0.1 mm is decent for many photonics or optics setups (though not ultra-high precision).
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Mounting hole grid, materials, thermal design are solid; suitable for general labs but perhaps not extreme vibration isolation or ultra-tight tolerances.

















