CENTRAL SCIENTIFIC CO., CHICAGO. U. 6. A. 



151 



No. F187. 



No. F201. 



F183. CLAMP, Support, Bridge Form.. For use with double rod optical bench or photometer, made up 

 of Xo. F303 End Supports and a pair of 19 mm square rods. Is easily clamped to the rod by a 

 slight movement of the handle seen in the illustration. Provided with an index line or zero 

 indicator in the same plane with the vertical hole, which is 10 mm in diameter $3.00 



F185. CLAMP, Support, Screw Adjustment For same uses as No. F179 Right Angle Clamp, but de- 

 signed to give a very fine adjustment in a plane perpendicular to the V. Provided with zero 

 indicator. Range of adjusting screw, over 25 mm, V opening 19 mm, hole 10 mm 6.00 



F187. CLAMP, Swivel. Very useful for holding pulleys, mirrors and lens supports where different 

 angular directions are desired. Two 19 mm V openings, which can be clamped at any angle 



to each other in parallel planes 1.20 



For less expensive CLAMP, with swivel, see No. 2916 Clamp Holder. 



F189. CLAMPS, T, for holding two round rods at right angles to each other in the same plane. 



No A B 



For rods of diameter, mm 13 19 



Each 65 1.10 



F191. CLAMP, Table, of iron, for a table top 8 cm thick or less, with accurately milled Vs at right 

 angles to each other. To be attached to the edge of the table for holding 10 to 19 mm round 

 or square rods, either horizontally or vertically. The broad flange is carefully milled and in- 

 sures stability. The T-screw is swiveled for protection of the table 1.60 



F192. CLAMP, Table, same as No. F191. For a table 11 cm thick or less 1.80 



F195. CLAMP, Table, wooden jaws, for a table top 8.5 cm thick or less. Designed for use where there 

 is danger of injury to the table top. Upper jaw, 8x18 cm; lower jaw, 8x10 em. The large 

 surface of jaws gives increased stability. The lower jaw is swiveled. Tapped %-12 to receive 

 19 mm rod 2.25 



F197. CLAMP, Table. Similar to No. F195, but without the wooden jaws. The flange at the top is broad 

 so that injury to the table top is prevented. Tapped %-16 to receive 13 mm rod 75 



F245. CLAMP, Telescope, for telescopes, lenses and cylinders of any form and size as well as irregular 

 objects up to 8 cm in diameter. Mounted on nickel-plated rod 20 cm long by 13 mm in 

 diameter 3.00 



F201. CLAMP, Telescope. Made of brass, for holding telescopes from 2 to 5 cm in diameter. The teles- 

 cope is held in place by a leather strap and is therefore not liable to injury as is the case when 

 metal clamps are used. A No. F133 Support Rod, 20 cm in length, is included, which may be 

 placed either as shown in the illustration or in a position at right angles to this. The clamp is 

 also tapped to receive a No. F131 Support Rod for carrying a scale 3.50 



