1、Mini Digital Protractor Operating Instructions1. NOMENCLATURE:A/ B/ CMagnets - Securely attaches gauge to any metal surface.D/E/F/GMeasuring facesHLCD display - Large , easy to read digitsION/OFF BUTTONJO% BUTTON - Degree/ percentage of slope conversion.KABS/REL - Absolute/ relative measurement conv
2、ersion.LHOLD BUTTON - Holding measured display values.MBATTERY COMPARTMENT2. TECHNICAL SPECIFICATIONS Measuring Range: 490 Working Temperature:0C-40C Resolution: 0. 05 Relative Humidity: 40%-80% Accuracy: 0. 05 Dimension: 545420mm Battery Type: 3V CR203233. Functions(1) Absolute angle measurementPre
3、ss ON/OFF and the unit will directly enter the state of absolute anglemeasurement (No matter change the batteries). It will display the angle between the measured surface and the level. When the angle betweenthe working surface of the unit and the level changes, the angle value changes accordingly.
4、When the two indicating arrows on both sides of the LCD display appear, they show that the working surface of the unit is not on the level. For example, when the arrow “” on one side appears, it shows that this side is under the level. It needs to move up this side of the unit to reach the level. Th
5、e arrow “” shows that it above the level. when the units working surface is on the level, The two indicating arrows will disappear.(2)Relative angle measurementPut the units working surface on the surface you need to preset, press ABS/REL button, “0.00” is displayed. Then move the unit to other surf
6、ace to be measured, the displayed value will be the included angle of the two surfaces. Press ABS/REL button for 35 seconds, it will change to the state of absolute measurement.(3) Upright displayThe displayed value would be not upside down whatever the unit is upside down or not.4. Attentions(1) Do
7、nt clean this precision device with organic solvent. Keep it away from water and corrosive.(2) Dont hurt the units working surface. Get rid of any dirt on it with soft cloth in order to keep its accuracy.(3)While using, it will shut down if the units buttons are not pressed in 3 minutes in order to
8、save power. When the power icon appears, it shows its power is used up and stops measuring. Replace with new 3V CR2032 batteries. Take out the batteries if its not used for a long time in order to avoid the leakage of battery liquid.(4) Keep this device indoors in -30 C+65 C and relative humidity 90
9、%.5. BUTTON OPERATING(1)ON/OFF BUTTONPress this button to switch on power, press it for 35 seconds to switchpower off.(2)O% BUTTON Degree (xx.xx) and percentage of slope (yy.yy%) in conversion(fig.A)Press O%, it displays “yy.yy%”. yy.yy%= tga100%(0a=xx.xx45)or yy.yy%=tg(90-a)100%(45a=xx.xx90)(3)ABS/
10、REL BUTTON In absolute measurement (fig.1, fig.2).In relative measurement. Press ABS/REL button to setting Zero at any position (fig.3,fig.4).Conversion between absolute measurement and relative measurement.Press ABS/REL button for 3 seconds and the unit will change back to the state of absolute mea
11、surement (fig.2,3). HOLD BUTTONIf the measured value needs to be saved, press HOLD to hold the display. The arrows on both sides will twinkle. Press it again it will quit.6. SETTING THE BATTERIES(1) Remove the battery cap by turning it counterclockwise with a battery, etc.,set in the grove.(2)Set three new batteries (with the + side facing up) and secure the battery cap in the reverse procedure.
