focal length : 103 results priced between £2.00 and £500.00

Made from plastic, the glass is held in the socket of the eye and is available in a variety of different focal lengths (focal length refers to the distance between the piece of work and the eye) different people have preferred distances of working.

In Stock Product Code : 999 207 Catalogue Page : 476 £2.35 exc. VAT £2.82 inc. VAT Made from plastic, the glass is held in the socket of the eye and is available in a variety of different focal lengths (focal length refers to the distance between the piece of work and the eye) - different people hav... Read the full product description... Add to Basket

This is a large sheet magnifier with no frame. It is useful item reading roadmaps or large areas of print and for viewing photographs. Keep one with you in the car. Also serves as a bookmark.

Description VIVOTEK FD8131V are easy-to-use fixed dome network cameras specifically designed for indoor security applications. Equipped with a 1MP sensor enabling viewing resolution of 1280x800 at 30 fps, users need to look no further for an all-in-one camera capable of capturing high quality HD video.With the vari-focal lens, the FD8131V provide users the freedom to adjust the field of view in accordance with their applications. The IP66-rated housing of FD8131V protects the camera body against...

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Photographic Lenses of the 1800's in France - Berthiot, Chevalier, Darlot, Derogy, Hermagis, Jamin, Lerebours, Solei" by Corrado D-Agostini c2001 Large HB, 370 pages

Eyeglass Aliminium 3.3x Magnification. 3" 75mm Focal Length - HE675

Eyeglass Aliminium 3x Magnification. 3.5" 87mm Focal Length - HE687

Eyeglass Aliminium 5x Magnification. 2" 50mm Focal Length - HE650

Eyeglass Aluminium 2.5x Magnification. 4" 100mm Focal Length - HE6100

Optiloupe Spectacle Eyeglasses 87mm Focal Length x3 Magnification - HE487

B-Stock, Focal Spirit One W- High-Fidelity-Headphone - closed back, over-ear, 40 mm driver with mylar/titanium membrane, 32 ohms rated impedance, 104 dB efficiency, frequency response: 6 - 22000 Hz, two removable anti-tangle cords ( one with remote-control), screwable 3.5/6.3mm stereo adapter, cable length: ca. 1,2 m, Weight: 225g (without cable) incl. Airline adapter, soft travel bag and hard storage case, color: white, B-Stock with full warranty, may have slight traces of use

Buy Lens Meniscus, 2" (50.1mm) Dia, 10" (25.4cm) Focal Length, .380" (9.6mm) Edge Thickness, for LVD Laser - Welding Supplies from Rapid Welding

Buy Lens Meniscus, 2.0" (51mm) Dia, 5.0" (127mm) Focal Length, .354" (9mm) Edge Thickness, for LVD Laser - Welding Supplies from Rapid Welding

Buy Lens Meniscus, 1.75" (44mm) Dia, 5" (127mm) Focal Length, .354" (9mm) Edge Thickness, for LVD Laser - Welding Supplies from Rapid Welding

B-Stock, Focal Spirit One B - High-Fidelity-Headphone - closed back, over-ear, 40 mm driver with mylar/titanium membrane, 32 ohms rated impedance, 104 dB efficiency, frequency response: 6 - 22000 Hz, two removable anti-tangle cord ( one with remote-control), screwable 3.5/6.3mm stereo adapter, cable length: ca. 1,2 m, Weight: 225g (without cable) incl. Airline adapter, soft travel bag and hard storage case, color: black, B-Stock with full warranty, may have slight traces of use

Buy Lens Meniscus, 1.5" (38.1mm) Dia, 5.0" (127mm) Focal Length, .290" (7mm) Edge Thickness, for LVD Laser - Welding Supplies from Rapid Welding

Buy Lens Meniscus, 2" (50.1mm) Dia, 7.5" (190mm) Focal Length, .380" (9.6mm) Edge Thickness, for LVD Laser - Welding Supplies from Rapid Welding

Price including UK P&P: £168.99 Availability: In stock 0.85x Focal Reducer/Corrector for Evostar-100ED DS-PRO Designed for serious Astro-Imagers. Optimised for the Evostar-100ED PRO, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction. Use in conjunction with Sky-watcher’s M48 Canon or Nikon T-ring adaptors see recommend accessories.

Optimised for the Evostar-100ED DS-PRO this superb quality accessory effectively reduces the telescope"s focal length by a factor of 0.85x and provides much improved field-edge correction.

This handmade pearl necklace features a single row of white baroque freshwater pearls, culminating in a single round blue lapis lazuli bead, with an antique effect sterling silver toggle clasp. Each pearl is individually hand knotted for strength and to prevent the pearls rubbing against each other. Dimensions: The lapis bead is approx. 10mm, This necklace is 40 cms in length (16 ins) The pearls are 5-6mm in diameter. All measurements are approximate. Gift box and pouch included.

A trio of ceramic focal beads - stylised tusk pendants. These beads are entirely formed by hand,  no moulds are used to create them. Each pendant is individually textured and then glazed. Two of the beads have a matte finish, with a wash of blue and brown respectively. The third tusk has been glazed with a soft wash of mottled green. These pendants would be ideal for making a range of Men's jewellery - the holes are large enough to accomodate cords up to 2 mm thick. I've included a metre length...

Flat 25 cm (10") Subwoofer for Dynamic bass. Max. power: 120W. Nom. power: 60W. Frequency response: 50Hz - 400Hz. Height: 3 1/8". Length: 14 5/8". Width: 10 7/8". Adjustable low-pass filter. 0-180° phase selector.

Type : Active enclosure with 20cm (8") subwoofer. Max. power : 120W. Nom. power : 60W. Frequency response : 50Hz – 400Hz. Height : 76mm (2,99"). Length : 348mm (13,70"). Width : 242mm (9,53"). Wiring kit supplied. Easy integration in the trunk or under a seat. High and low level inputs. Intensify the bass frequencies of your audio system. Remote Bass control included.

Active enclosure with 20cm (8”) subwoofer. Max. power: 150W. Nom. power: 75W. Frequency response: 45Hz - 150Hz. Height: 71.5mm (2.8”). Length: 344mm (13.5”). Width: 250mm (9,8”). Compact Aluminum chassis - Low height, high rigidity. Built-in amplifier. 50 to 150Hz adjustable low-pass filter. 0-180° phase selector.

G1080 HDMI to HDMI High Speed. A genuine High Quality product. High build quality and high performance HDMI to HDMI High Speed cable that is fully tested. Supports all HDMI resolutions such as 1080p and 3D and is guaranteed to work in all systems at all resolutions and supports all features of the HDMI 1.4 hardware specification except the Ethernet channel. This cable length is made with highest quality 24 AWG silver plated copper cable cores that are much larger than most other cables. Custom...

Vented enclosure. 30cm (12") subwoofer. Max. Power 500W. Nom. Power 250W RMS. Sensitivity (2.83V/1m) 94dB. Frequency response 40Hz - 500Hz. Height 360mm (143/16"). Base depth 390mm (153/8"). Length 527mm (203/4").

Tribal Focal Bead Set These tribal focal bead sets measure 30mm in length and can be strung together to make tribal style necklaces. They are just as impressive worn as they are or mixed with coordinating beads to create something really special. We love the unique variation in the colours and markings of the natural stones which make each one individual. Available in a range of colourful gemstones. Stocks are limited so don`t miss out! Sets are available in rose quartz, unakite, and various shades...

Buy Lens Meniscus, 2" (50.1mm) Dia, 5" (127mm) Focal Length, .380" (9.6mm) Edge Thickness, for LVD Laser - Welding Supplies from Rapid Welding

Buy Lens Meniscus 1.5" (38mm) Dia, 5.0" (127mm) Focal length, .290" (7.4mm) Edge Thickness - Welding Supplies from Rapid Welding

Art Nouveau inspired necklace with vintage black faceted glass drop and etched brass bead cap. The necklace centrepiece is an antique reproduction brass stamping with Art Nouveau floral design, finished in antique gold to match the delicate double row bar chain. All metal parts are nickel free brass. The necklace is fitted with a lobster claw clasp and extension chain. Faceted black glass drop: approximately 1.5 inches length (3.81 cm) Necklace length: 17 inches (43.18 cm)