Educational 2 15

JKA-1 : Super quality metal gears, accurate, mill cut ratio 40, 10, 2.5 & 0.625 mm per second, speed change clutch with intermediate off position.
Cylinder 6x11" with crown wheel engaging shaft. A spring loaded device allows turning by hand if necessary.
Moving in slot in the bed allowing variation in paper length for 60" to 66.
Rigid cast iron stand works up & down by a large screw.
Fine adjustment ensuring return of outer arm to exactly the same position after change of another paper.
ACCESSORIES SUPPLIED WITH EQUIPMENT : OPTIONAL
Double Time Maker.
Mercury Manometer.
Separate smoking & Varnishing Apparatus.
Smoking Burner.

JKA-31 : Electrically driven recording drums suitable for use by students for general experiments.
Drive mechanism consists of Constant speed electric motor and accurate Gear-box contained in the base together with robust plate clutch. Engagement of various gear ratios are effected by sliding the lever into the slot marked with surface speed or by a knob in seperate models.
6" dia main cylinder and Stainless Steel spindle have been standardized to make the same universal and interchangeable. Double electric contact arms are clamped on the main spindle and a stout double-contact block is fitted on top of the base.
Gear ratios i.e. 640 mm, 320 mm, 25 mm, 12.5 mm, 2.5 mm, 1.2 mm, 0.25 mm, and 0.12 mm per sec, are effected by sliding lever into the slot marked with 8-surface speeds.
Optional :
When longer records are needed a long paper extension device can be provided and fitted in position by a single set screw.

JKA-51 : Hand driven with wall fixing arrangement.

JKA-51-A : Motor driven.

JKA-52 : To carry Long Paper Smoker & Varnisher-with castors.

JKA-53 : Stainless Steel for 24 papers, portable, space saving.

JKA-62 : Electrical, double magnet, single marker.

"Teknik" Manometers :
All Manometers are fabricated from true-bore Borosilicate glass, floats are perfectly lapped to eliminate leakage and are fitted with feather weight Stainless Steel capilary.

Standard Mercury Manometers :
JKA-65 : Without stopcock, with adjustable scale.

Water Manometers :
JKA-65A : Without Stopcock, with adjustable scale.

Water Manometers :
JKA-65B : With stopcock and adjustable scale.

Condon's Rat B.P. Manometers :
JKA-65C : With special fine tube and cannula fitted with scale fixing rod.

Simple Electrode :
JKA-67 : Made from clear Acrylic sheet with two copper wire.

JKA-7 : Useful for recording muscle contractions on a smoked paper around cylinder of a drum. The components of assembly are as under :
1. E/8 Recording Drum. 2. Drum Paper Clips.
3. Adjustable stand. 4. Crank Myograph.
5. Tuning Fork 6. Dubois Reymond Induction coil.
7. Dubois Reymond Key. 8. Simple electrode.

JKA-11 : Glazed Paper 100 cm x 15 cm—100 Nos.
JKA-19 : Glazed Paper 50 cm x 15 cm—100 Nos.
JKA-20 : Cylinder - 6" dia. x 6" ht. with locking device.
JKA-21 : Cylinder - 6" dia. x 10" ht. with locking device.
JKA-22 : Cylinder - 12" dia. x 6" ht. with locking device.
JKA-42 : Drum paper clips for clamping paper to drum.

JKA-45 : Smoking Stand with turning handle for all sizes of cylinders.
JKA-46 : Smoking Burner-Gas.
JKA-47 : Smoking Burner-Kerosene with winding up gear.

JKA-5 : Can take paper upto 2 meters length and consists of a bar upon which one 6x3" cylinder slides. The forked arm is only to be slided over the drum leg to fix it in position. To achieve accurate alignment with drum leveling screws are provided.