Tip & How-To about Watches

Using Pencils for Lubrication

The"lead" in a pencil is graphite. This is commonly used in industry for lubrication in situations where there are high temperatures or pressures or where dirt would stick to oil. Around the home it can be used to lubricate where grease or oil would be messy, e.g.lubricating zips, drawing instruments, sliding surfaces, locks etc.To lubricate a zip simply run the tip up and down the teeth of the open zip.To lubricate a tumbler lock, first break off a lump of lead from a pencil. Push this into the keyhole of the lock. The aim is to crush the lead up into powder in the lock. Push the key into the lock and turn it backwards and forwards. If you meet any resistance just keep sliding the key in and out and backwards and forwards until the lead is broken up. Alternatively run the tip of a pencil backwards and forwards along the teeth on the key.Graphite can also be used for lubrication where a surface can become very hot and where oil would be unsuitable e.g. hinges on stoves, sliding parts. Make some graphite powder by splitting up a pencil using a knife or otherwise and extract the lead. Crush this in the lid of a jar with a blunt object such as the handle of a screwdriver or something similar. The powder can then be shaken into the hinges. If it is mixed with oil, it can be formed into a paste. This can then be worked into the joint or onto the surface to be lubricated.

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I calibrated my Timex WS4 using a known barometric pressure and set the weather conditions but the watch is telling me I'm at an altitude of -42 meters (which I'm not) and the temperature is at least 10 degrees too high (I'm not wearing the watch)


You should carefully read the manual on this watch. It is a very sophisticated instrument realitive to its cost.

The barometric pressure in the CAL mode is set to the reference sea level. The pressure that is read in the other areas is the actual or relative pressure at your location.

There are some tollerences for the accuracy of these watches. What they are excellent at is seeing the relative differences or changes. I found that when I set the reference barometric pressure (Sea Level Pressure), everything falls in to place. I found the WP4 to be accurate to within about 15 to 20 feet accuracy for altitude most of the time. It is important to periodically check the barometric pressure from the weather office if you want it to be as accurate as possible.

When hiking or out trecking, it is advisable to check the watch's altitude relative to the map that you are using, or to a known reference. Then as you travel you can check for the altitude change.

Take care that this type of watch is to be used as a quick or easy reference only. It is not certified to be used in situations where life and safety are fully dependent on the readings from this type of watch. It is a precision instrument, but not as precise as the high end professional certified types. It is best to refer to proper maps (charts), and depend on a certified mechanical compass for absolute reference.

Jerry G.

Apr 04, 2011 | Timex Expedition WS4 WideScreen 4...

1 Answer

can I swim laps w/ my ebel 30 meter watch? The watch has 4 screws on the back and the crown does not screw down.


Thank you for contacting FixYa.
Water Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured watches was exposed to in a leakage test. The test pressure can be indicated either directly in bars, or (more commonly) as an equivalent water depth in meters (in the United States sometimes also in feet).
An indication of the test pressure in terms of water depth does not mean a water resistant watch was designed for repeated long term use in such water depths. For example, a water resistant watch marked at 30 meters depth cannot be expected to withstand activity for longer time periods in a swimming pool, let alone continue to function at 30 meters under water. This is because the test is conducted only once using static pressure on some of the newly manufactured watches. The test for qualifying a diving watch for repeated usage in a given depth includes safety margins to take factors in account like aging of the seals, rapidly changing water pressure and temperature, as well as dynamic mechanical stresses encountered by a watch. Also every diving watch has to be fully tested for water resistance.
Hope this helps.
Jewel

Sep 02, 2010 | Ebel Classic Wave 9090F249725 Wrist Watch

2 Answers

how to set the time on a breo watch?


Received my Breo watch in the post today, and i thought it would be simple enough to change the settings...however when i press the A and M button on the back nothing happens, i've pressing it lightly and with more pressure but to no avail. the manual just says to press it, so am i doing something wrong?

Jul 02, 2010 | Watches

1 Answer

how to place the lead refill in the pen


what kind of pencil is it? you can usually pull the eraser out and drop the lead in. but if worse comes to worse just hold down the button to release lead and put your refills through the business end.

Dec 24, 2009 | Colibri Watches

1 Answer

Why do the Omega Seamaster watches have a second crown close to the top of the watch? What is its function?


This is a helium release valve.
The purpose and function of the helium relief valve is a common point of confusion. It has nothing to do with normal underwater diving. Neither does it have anything to do with the depth rating for a diving watch. Helium does NOT seep into the watch while the watch is in water at any depth!

To put it simply, you can completely ignore a helium relief valve. This feature is not used in any way with any form of normal SCUBA diving or anything else that involves less than a multi-million dollar deep sea exploration project.

SCUBA diving activities normally occur at depths of no more than 120 feet. At 250 feet, air becomes toxic due to changes caused by the high pressures at such depths. For those who do very deep sea research, they often use diving bells, dry dive suits, and other types of very deep ocean exploration vessels. In some of these, a highly helium-saturated atmosphere is used to avoid the air toxicity effect.

The purpose of a helium release valve is for people who wear their watch inside the helium-saturated environment for an extended period. Because helium is the smallest atom, it will seep through the watch's seals under the high air (not water) pressures in this environment. If the watch stays in this environment for an extended time, helium will continue to seep in to the watch until the air pressure inside the watch (initially surface air pressure) equalizes to the air pressure in the environment.

This becomes a problem when the vessel is brought back up and depressurized. The helium which seeped into the watch over a couple of days, cannot seep out any faster. The excess pressure inside the watch needs a way to release faster than it seeped in. It is only in this situation that a watch needs a helium relief valve at all. If a relief valve was not on the watch, the excess pressure would likely escape by pushing the crystal out.

But, unless you are in this exact situation, you should never keep this valve open. While the watch is designed to maintain most of its waterproof abilities even when the valve open, it still serves no purpose and increases risk of damage to the watch to do so.

Sep 23, 2009 | Omega Seamaster 2541.80 Wrist Watch

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