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Holtwood Marketing Ltd. The Survey Centre, Meridian House, |
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Holtwood Marketing Ltd. The Survey Centre, Meridian House, |
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Wall Bolts & Brass Plates
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Cat. No. 11 h/7-20 Flat headed brass marker as in 7 1 h17 overleaf, but with short 20mm shaft for installing in hard surfaces. Grout or epoxy-resin. Cat. No. 11 h-SBO Special double drill for installing 11 h/6 & 11 h17 markers. Drills a 72 mm hole for the 1 1 h/SD plug or epoxy-resin, and a 30mm rebate to set the head of the mark flush with the surface. |
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Cat. No. 11 m- 1 (100 x 100mm) and 11 m-2 (50 x 50mm) Brass plates for casting into pillars or grouting into existing surfaces. Flat machined unmarked surface to facilitate the scribing or punching of reference points. D d S L F 100x700 16/10 94 100 30 11m-1 50x50 16 75 82 24 11m-2 |
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Cat. No. 11 r 1 (socket) and 11 r-MB (head and bolt) Brass wall socket for grouting or epoxying into 12mm hole. Shown with brass conical measuring head and 22mm M8 stainless steel bolt. |
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Cat. No. 5h-40 (complete) or Sleeve/40 (sleeve and grubscrew) Brass expansion sleeves for placing in 11]-12mm holes. Grubscrew in sleeve is tightened with allen key to expand end of sleeve, epoxy also recommended. Shown with brass measuring head, but takes all M8 fittings. |
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Cat. No. 11 r240 Brass expansion sleeve as above, but with white PVC coating and flat 30mm PVC facing. Fits into 13-14mm hole, and takes all M8 fittings. |
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Cat. No. 5-2.11-3 Heavy duty brass wall sockets, for grouting into structures for long-term monitoring. With M 12 socket, c/w protective cover and retaining bolt. Heavy duty precise measuring heads which fit exactly into above socket. Suitable for use with heavy invar staves, 3 lengths of head for use in awkward locations. L=50mm Cat. No. 5-2.4 L= 100mm Cat. No. 5-2.4L100 L=150mm Cat. No. 5-2.4L150 |
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010823
060628
060701
