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For efficient operation without the need for directing the reflector toward the instrument, a 360° prism is required. This type of reflector consists of six corner-cube prisms joined together. The arrangement allows the measuring beam to reflect directly back to its source from any position on the prism set. The even distribution of the prisms provides similar offset and accuracy readings from any side.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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The GPR range of prisms are supplied with a holder and target plate. The GPR121 Professional version is manufactured from quality metal components, for accuracy and long life. The GPR111, a low-cost Basic prism is moulded into a plastic holder and target plate.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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Premium Series 0/-30mm Constant Prism System. Fully compatible with leading manufacturers such as Trimble, Sokkia, Topcon, Pentax, Nikon, etc. All metal holder and target warranted for life. Hermetically sealed 2-1/2" (62.5mm) precise prism, Tension adjusting brass knob
Brass 5/8-11 bayonet adapter
Colors available: Orange, Chartreuse, Yellow
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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Prism is hermetically sealed and charged with nitrogen to prevent fogging; ideally suited for cold weather regions as well as high humidity areas.
Fully compatible with leading manufacturers such as Sokkia, Topcon, Pentax, Nikon, etc.
All metal holder and target warranted for life
Tension adjusting brass knob
Brass 5/8-11 bayonet adapter
Target colors available: Orange, Chartreuse, Yellow
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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Single prism, complete with soft leather pouch. Slot in handle accommodates plumb bob cord. Measures 23/8" (60mm) top to bottom.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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Permits stepping off angles of 90° and 180° with a center lens which permits foresight viewing. Slot in handle accommodates plumb bob cord. Features a larger field of view, and larger foresight viewing glass. Complete with leather belt loop case. Measures 33/4" (95mm) top to bottom.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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Its perfect for low light conditions like tunneling, mining, or forestry applications the strobe is also useful in conditions where the target may be hard to see due to background light. The 62-mm silver-coated strobe prism flashes approximately every 1/2-second and features an easy on/off button on the canister.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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This 25 mm copper-coated prism features aluminum double yoke construction w/tilting coaxial target. There are on-board 130-minute vials, top & bottom. It includes replaceable plumb bob point. Height to center of prism w/plumb bob point: 100 mm.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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This -30 mm offset prism holder is constructed from durable aluminum and sealed with a rugged corrosion-proof electrostatic powder paint coating.
E-mail info@lewisinstruments.com for purchasing inquiries or call (204) 772-0366.
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