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The Main Rules Collection (5130)
Traditional Categories (155)


2762 Sports thumb thumb thumb thumb thumb thumb thumb
YO-YOING
There is a certain "tightness" which the string should be kept at. If you unwind a few inches of string and remove all tension from that few inches; and the string has a propensity to wind about itself, it is not at the right tension. About sixteen twists per inch is right for most strings.
Bill Alton, Yoyo Newsletter Editor, Portsmouth, NH, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.8 out of 10 based on 15 reviews
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2763 Sports thumb thumb thumb thumb thumb thumb thumb
YO-YOING
The yo-yo makes music. A very good yo-yo thrower can actually make the string hum so loud that it is audible in a quiet environment. The rim of the yo-yo is probably traveling over 40 MPH if it makes any audible note. If the note it makes is low C the rim is traveling at nearly 60 MPH.
Bill Alton, Yoyo Newsletter Editor, Portsmouth, NH, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.7 out of 10 based on 15 reviews
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2764 Crafts thumb thumb thumb thumb thumb thumb thumb
MAKING PAPER MACHE
It takes 15-20 collections of dryer lint from fluffy towels to make enough paper mache for one small table decoration. Sort loads by color and you'll have lint that doesn't need to be dyed.
Terry Larimore, Writer and Therapist, Houston, TX, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 7 out of 10 based on 15 reviews
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2765 Education thumb thumb thumb thumb thumb
TEACHING A FOREIGN LANGUAGE
You need a minimum of 8 to 10 students in a class to make it economically viable to hire a teacher. However, a teacher can teach a foreign language to a maximum of 4 to 6 students at one time. Therefore, a foreign language class cannot be both economically viable and effective.
Richard Showstack, Bon Vivant, Newport Beach, CA, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 5.2 out of 10 based on 16 reviews
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2766 Gambling thumb thumb thumb thumb thumb thumb thumb thumb
FINDING THE PATSY
If you're playing cards in any gambling game for over 20 minutes and have not figured out who the patsy at the table is, then it's you.
Gerry M. Flick, MD, JC, BCLM, Ship's Surgeon, Tacoma, WA, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 8.2 out of 10 based on 24 reviews
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2767 Architecture thumb thumb thumb thumb thumb thumb
PLANNING A SPIRAL STAIR
Spiral stairs for inside a building should be built so that they ascend as they go counter-clockwise. This is because most people are right-handed, and in the olden days, when castles were being attacked by gangs of marauders, it was life or death for the castle's inhabitants to have their weapon arms free while they were fighting.
Kate Gladstone, Brooklyn, NY, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.1 out of 10 based on 16 reviews
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2768 Building thumb thumb thumb thumb thumb thumb
NUMBER OF HOTEL ROOMS PER AIRPORT
For every one million passengers using an airport there will be 200 hotel rooms in the vicinity. An airport processing 15 million passengers will have 3000 hotel rooms around it.
Mike Brown, Airport Planner, Burnaby, BC, Canada
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.2 out of 10 based on 15 reviews
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2769 Building thumb thumb thumb thumb thumb thumb
DETERMINING THE COST OF A HOTEL ROOM
For every $1000 it costs to build a hotel room, the hotel must get $1 in room revenue. If a hotel costs $100,000 per room to build, they must average $100 per room per night.
Mike Brown, Airport Planner, Burnaby, BC, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 5.8 out of 10 based on 16 reviews
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2770 Electricity thumb thumb thumb thumb thumb thumb thumb
WIRE SIZE AND CURRENT CAPACITY OF WIRE
Changing wire size by three guage numbers doubles or halves the cross-sectional area (and current capacity.) Six guage numbers doubles or halves the diameter.
R. A. Heindl, Design Engineer, Euclid, OH, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.7 out of 10 based on 14 reviews
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2771 Safety thumb thumb thumb thumb thumb thumb thumb
LASER SAFETY
For purposes of laser safety, an eyeblink is assumed to take 250 milliseconds.
R. A. Heindl, Design Engineer, Euclid, OH, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.7 out of 10 based on 14 reviews
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2772 House and Home thumb thumb thumb thumb thumb thumb thumb
MOWING YOUR LAWN
When mowing a lawn, if you cut off no more than 1/3 of the length of the grass you can safely leave the clippings on the lawn.
R. A. Heindl, Design Engineer, Euclid, OH, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 7.4 out of 10 based on 17 reviews
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