Lab Techniques

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A Broken Glass Tool, Spectroscopes, a Grinding Machine

IT'S JUST A COMMONPLACE that the fellow who can always have whatever he wants by writing a check for..

134.00 Ex Tax: 134.00

A Mirror Grinding Machine, a Spark Plug Telescope Mount

THE SIXTH Annual Convention of amateur telescope enthusiasts will be held at Stellafane, near Spring..

134.00 Ex Tax: 134.00

Abrasives, with Focus on Diamond Abrasives

UNCOMMON OPTICAL GRINDING and polishing materials such as boron carbide, sapphire dust, titanium oxi..

134.00 Ex Tax: 134.00

Accuracy of the Knife-Edge Test

The first concerns a telescope made by a Benedictine nun, Sister Cornelia of Mount Saint Mary's Conv..

134.00 Ex Tax: 134.00

Aluminizing Equipment, Strain-Testing Glass, Pitch Lap Manufacture

ALUMINIZING one's own telescope mirrors is probably uneconomical, considering the time, materials an..

134.00 Ex Tax: 134.00

Aluminizing Mirrors, Some Knife-Edge Test Devices

LAST MONTH in this department Professor Henry L. Yeagley, of the Department of Physics at the Pennsy..

134.00 Ex Tax: 134.00

Amateur Telescopes, Mirror Grinding Tips, Schupmann Telescopes

BICYCLES having now become once more fashionable, the city or town owner of a richest-field telescop..

134.00 Ex Tax: 134.00

An Ambitious Observatory Is Built By Father and Son

A FEW WEEKS ago one of the largest and most carefully made amateur astronomical observatories went i..

134.00 Ex Tax: 134.00

An Evaporation Chamber, Designing Barlow Lenses, Metal Mirrors, Sources of Rouge

HERE IS interesting news. Aluminizing brought one step nearer reach of the average amateur and at le..

134.00 Ex Tax: 134.00

Another Automatic Mirror Grinder

AMATEUR telescope makers and astronomers within a radius of one light-year of Stellafane, near Sprin..

134.00 Ex Tax: 134.00

Another Grinding - Polishing Machine

IN THIS DEPARTMENT in the October and November numbers Patrick A. Driscoll described the design and ..

134.00 Ex Tax: 134.00

Another Method of Making Mirrors

WHICH OPTICAL SHOP methods are best-professional or amateur?Neither. In each the needs are different..

134.00 Ex Tax: 134.00

Use to measure pH changes in marine aquariums, aquariums with African cichlids, and very alkaline ..
Ex Tax: 613.60
FRESHWATER MASTER TEST KITMeasures the most important aquarium levels quickly and accuratelyBenefits..
Ex Tax: 2,859.38
GH & KH TEST KITThis test kit includes everything you need to measure the general and carbonate ..
Ex Tax: 1,012.44
6-fold test strips for quick water testing50 test strips.NEW: With a chlorine test (disinfectant in ..
Ex Tax: 1,303.90
The key to superior adsorption is the maximized surface area found on each granule and pellet of a..
Ex Tax: 130.00
Make My Hobby now offers an alternative to the ever increasing high cost of standard commercial fish..
Ex Tax: 50.00
Ready-to-use long-term nutrient substrate mixture for new aquariumsDoes not require mixing with grav..
Ex Tax: 1,228.50
Natural substrate which filters and enhances plant growth.Supports the filter with its large coloniz..
Ex Tax: 2,866.50
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