Best Focus Calibration Reference Chart

GY-AS3935 Lighting Sensor Module SPI I2C MA5532-AE Lighting Strike Thunder Storm Distance Detector Breakout Board

Reference link: https://tinyurl(dot)com/AS3935-light-detector.
Video link: https://youtu(dot)be/oXqSIyaHR_I.
The splitter uses an inductor (antenna) designed specifically for this application, and the board is fully calibrated.This ensures that you can support low-level IC calibration without having to write a large back-end – focus on your end application!.
This sensor cannot drive an LCD display on it own It will need a microcontroller, like ESP8266/ESP32 or Arduino Pro Mini / Pro Micro 3.3V The Microcontroller will control the sensor and control the display as well..
What you will get is : 1 X GY-AS3935 Lightning Sensor.

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Ambient Weather WS-228TBH 9\ Brushed Aluminum Contemporary Barometer with Temperature and Humidity, Metallic Radiant Blue

The USA version of this instrument displays barometric pressure in imperial units (inHg) and includes a reference needle for tracking changes..
The 9" brushed aluminum bezel and radiant blue dial is both bold and handsome. It's contemporary design is at home in the office, board room or the modern living room setting..
The barometer is equipped with a set screw for easy calibration. The back includes a hook for easy hanging..
A reference needle tracks changes in barometric pressure..
The barometer allows for sea-level calibration up to 3,000 feet. Do not purchase this barometer is you live above 3,000'..

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EZshoot Scope Leveling Kit with High-Precision Bubble Leveling System, Magnetic Universal Leveling Tool, Compact Storage Case for Equipment and Maintenance

Easy use – The reference level is equipped with an ultra-strong magnetic bottom, placing steadier on the scopes turret cap with steel inside. Smaller bubbles, more accurate calibration, combine it with the barrel clamp level until the reference level is aligned with the barrel clamp level..
Higher Accuracy – We optimized the calibration distance and all the levels are carefully checked at the factory. The integrated bubble is more accurate and sensitive to adjust the crosshair of your scope, effectively enhance precision, especially long-range shooting, even 101 yards away..
Premier Craft – Non-marring pads of barrel clamp prevent scratching from your barrel. The scope leveling kit is made of rugged aluminum alloy with an anodized finish..
Versatility – This level scope mounting is excellent for leveling various diameter barrel, red dot and other optics..
Package Include – 1 x Reference Level, 1 x Barrel Clamp Level, 1 x Allen Key, 1 x Instructions and friendly customer service..

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EZshoot Scope Leveling Kit with High-Precision Bubble Leveling System, Magnetic Universal Leveling Tool, Compact Storage Case for Equipment and Maintenance

Easy use - The reference level is equipped with an ultra-strong magnetic bottom, placing steadier on the scopes turret cap with steel inside. Smaller bubbles, more accurate calibration, combine it with the barrel clamp level until the reference level is aligned with the barrel clamp level..
Higher Accuracy - We optimized the calibration distance and all the levels are carefully checked at the factory. The integrated bubble is more accurate and sensitive to adjust the crosshair of your scope, effectively enhance precision, especially long-range shooting, even 101 yards away..
Premier Craft - Non-marring pads of barrel clamp prevent scratching from your barrel. The scope leveling kit is made of rugged aluminum alloy with an anodized finish..
Versatility - This level scope mounting is excellent for leveling various diameter barrel, red dot and other optics..
Package Include - 1 x Reference Level, 1 x Barrel Clamp Level, 1 x Allen Key, 1 x Instructions and friendly customer service..

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General Hydroponics Ph 4.01 & Ph 7.0 Calibration Solution Kit, 8 oz

2 Bottles - 1 Each Of Ph 4.01 & Ph 7.0 Calibration Solution.
Highest Quality Electronic Meter Reference Solutions.
Each Batch Is Checked To Ensure Calibration.

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Hach 2100Q01 2100Q Portable Turbidimeter

Single-standard RapidCal calibration offers the simplest solution for low-level measurements.
Single-step verification and on-screen assisted calibration eliminates the need to reference complicated manuals.
Optional USB module enables simple data transfer. All data is easily downloaded to any computer, providing superior data integrity and availability.
Exclusive algorithm in the Rapidly Settling Turbidity mode provides accurate, repeatable measurements for rapidly settling, difficult-to-measure samples while eliminating the need for redundant measurements and estimating.

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Mardatt 6 Pcs Precision Scale Calibration Weight Set, 5g 10g 2x20g 50g Grams Steel Weights Calibration with Tweezers for Digital Balance Scale, Jewellery Scale, M2 Class (Total 100g)

【Complete Calibration Weight Set】Everything you need to keep your scales zeroed and accurate in one protective box case. Includes 1 x 50g, 2 x 20g, 1 x 10g, 1 x 5g calibration weights and tweezers,totally 6Pcs(100g)..
【Stainless Steel Anti-oxidation】Steel construction of calibration weight with chrome plated finish for well stability, corrosion and rust resistance, and low magnetic susceptibility, Durable material will not be damaged and can be reused multiple times..
【Extreme Accuracy】Permissible error is +/_0.003g, comparable with NIST-traceable calibration weights in their precision, yet highly affordable. Weights are standard measuring tools for meeting your daily demands..
【Perfect Case】Each of these weights are individually identified with their weight stamped into them for ease of reference, and packed in a custom-recessed, foam-padded presentation box for protection. The multi-layer packaging can avoid damage during transportation..
【Wide Application】The complete calibration set for Digital Jewellery Scale, General Laboratory, Commercial, and Educational use..

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Mardatt 16 Pcs Precision Scale Calibration Weight Set,10/20/50/100/200g, 500/200/100/50/20/10mg Steel Weights Calibration with Tweezers for Digital Balance Scale, Jewellery Scale(Total 500g)

【Complete Calibration Weight Set】Everything you need to keep your scales zeroed and accurate in one protective box case. Includes 1 x 200g, 2x 100g, 1 x 50g, 2 x 20g, 1 x 10g, 1 x 5g , 1 x 10mg, 2 x 20mg, 1 x 50mg, 1 x 100mg, 2 x 200mg, 1 x 500mg calibration weights and tweezers,totally 16Pcs(500g)..
【Anti-oxidation Stainless Steel Material】Steel construction of calibration weight with chrome plated finish for well stability, corrosion and rust resistance, and low magnetic susceptibility, Durable material will not be damaged and can be reused multiple times..
【Extreme Accuracy】Permissible error is +/_0.003g, comparable with NIST-traceable calibration weights in their precision, yet highly affordable. Weights are standard measuring tools for meeting your daily demands..
【Perfect Case】Each of these weights are individually identified with their weight stamped into them for ease of reference, and packed in a custom-recessed, foam-padded presentation box for protection. The multi-layer packaging can avoid damage during transportation..
【Wide Application】The complete calibration set for Digital Jewellery Scale, General Laboratory, Commercial, and Educational use..

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Mardatt 8 Pcs Precision Scale Calibration Weight Set, 10g 2x20g 50g 2x100g 200g Grams Steel Weights Calibration with Tweezers for Digital Balance Scale, Jewellery Scale, M2 Class(Totally 500g)

【Complete Calibration Weight Set】Everything you need to keep your scales zeroed and accurate in one protective box case. Includes 1 x 200g, 2x 100g, 1 x 50g, 2 x 20g, 1 x 10g, 1 x 5g calibration weights and tweezers,totally 8Pcs(500g)..
【Anti-oxidation Stainless Steel Material】Steel construction of calibration weight with chrome plated finish for well stability, corrosion and rust resistance, and low magnetic susceptibility, Durable material will not be damaged and can be reused multiple times..
【Extreme Accuracy】Permissible error is +/_0.003g, comparable with NIST-traceable calibration weights in their precision, yet highly affordable. Weights are standard measuring tools for meeting your daily demands..
【Perfect Case】Each of these weights are individually identified with their weight stamped into them for ease of reference, and packed in a custom-recessed, foam-padded presentation box for protection. The multi-layer packaging can avoid damage during transportation..
【Wide Application】The complete calibration set for Digital Jewellery Scale, General Laboratory, Commercial, and Educational use..

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